Opinions and criticisms of new build

Hello, this is my first post on these forums, though I have been lurking around for a few months now soaking up some knowledge as they say. I decided recently to take the plunge and build my own PC. I've gone from an Atari ST to a Compaq Presario to a HP Pavilion and finally to a Sony Vaio. Each were good pc's in their day and all were either very reliable or I was very lucky. I never had to replace anything major on any of these though I did add a sound card here or video card there. I never really gave much thought to how or why they worked, only that they did. It was just in the last few years that I really started to give thought to the how and why. The more I learned the more I became frustrated with pre-built pc's. I got tired of not being able to upgrade proprietary parts (will never buy Sony again). It seemed such a waste to get rid of a whole PC when there were only a couple of things that needed upgrading. My experiences with Sony are what finally made me finally say enough is enough. I decided I wanted total control of MY PC, and so my story begins. Here is my current PC:

Sony VAIO RB44G - P4 640 3.2 GHz
Chipset type Intel 915G Express
G.SKILL Value 2GB (2 x 1GB) 184-Pin DDR SDRAM DDR 400 (PC 3200)
Hard Drive 1.0 x 250.0 GB - Standard - Serial ATA-150 - 7200.0 rpm
2 IDE drives 1 dvdrw and 1 dvd-rom & LG Supermulti Burner with LightScribe Model GSA-E40L External Drive
Gigapocket Analog TV tuner (doesn't work with Windows 7)
Sound Blaster X-Fi XtremeGamer (actually replaced with HT Omega Claro before upgrading to W7 - didn't want to deal with Creative W7 driver issues)
EVGA 256-P2-N751-TR GeForce 8600 GT 256MB 128-bit GDDR3 PCI Express x16 SLI Support Video Card (best I could do at the time w/o replacing psu)
305 W. PSU  
Sony SDM-HS95P 19in 1280x1024 flatscreen monitor
Logitech G11 Gaming Keyboard and MX600 Wireless Laser Mouse
Windows 7 Home Premium (upgraded from Windows XP 2005 Media Center)

As I am just looking for opinions and useful advice on items already purchased I will skip the New Build format and just list the parts I've decided and my reasoning behind them.

COOLER MASTER HAF 922 - Looks like a great case with plenty of room for expansion and excellent airflow/cooling properties. Only $90 w/free shipping.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

COOLER MASTER Silent Pro 700 RS-700-AMBA-D3 700W ATX12V V2.3 SLI Certified CrossFire Ready 80 PLUS Certified Modular Active PFC Power Supply - Enough to power a mid to high end system - don't plan on going the crossfire/sli route- modular and I got it for $80 w/free shipping after $20 rebate.  
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

ASUS M4A785TD-V EVO AM3 AMD 785G HDMI ATX AMD Motherboard - I debated quite a bit about this once I decided to go the AMD route, onboard sound and video nice to know you have in case sound/video card crap out on you. I bought this mainly on Asus reputation and the good reviews. $80 and free shipping didn't hurt either.  
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

AMD Phenom II X4 955 Black Edition Deneb 3.2GHz- C3 stepping - this was my hardest decision as I debated between this and 555BE dual core and the Athlon II 630. Finally decided to spend the extra $60 and not take a chance on the 555BE lottery, or the lack of l3 cache on the 630 for future applications. I would like this to last at least 3 years.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) CS-7 - Deciding on RAM nearly drove me insane too   I went with these because of the tighter timings and some problems being reported on the GSkill forums about 1600mhz ram and my mobo. $115 and free shipping.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

SAMSUNG DVD Burner SH-S243N/BEBS - Most recent Sata drive from Samsung ( haven't had a bad product from them yet.   ) $24 and free shipping
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Western Digital Caviar Black WD6401AALS 640GB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive - Good reputation/5year warranty $65 and FS
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

HT | OMEGA CLARO 7.1 Channels 24-bit 192KHz PCI Interface Sound Card - Tired of dealing with Creative Sound Cards. Very impressed with this card so far, paired with Sennheiser HD555 headphones($130 and FS) I'm in heaven. Sounds fantastic with my old Onkyo 5.1 reciever. Wish I had spent the extra $15 for the Claro+. $160 and free shipping.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

SAMSUNG 2333HD High Glossy Black 23" 5ms HDMI Widescreen Full HD LCD Monitor 300 cd/m2 DC 10,000:1 (1,000:1) Built-in Speakers 1920x1080. - Love Samsung, built in hdtv tuner, 2 hdmi inputs, and the best part is I only paid $219 with FS.  

Windows 7 Upgrade disc - hope I can use this on new build, but if not guess I'll buy OEM 64 bit. Should have waited to build new system before buying upgrade for old one.

I've decided to go ATI for my videocard after many years with Nvidia products as the 5000 series will pass Blue ray sound through Cyberlink DVD software. I can't decide if I want to get the 5770 or wait for the 5830/50 to come down in price. Sapphire or XFX would be my two preferred vendors. Any suggestions or advice would be appreciated. I wish EVGA made ATI cards as they would jump to the top of the list.

I pretty much going to go with Samsung for my Blue ray drive, I'm just waiting for a good deal on it as I am no hurry for it.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

A TV tuner is last on my list but am in no hurry for this either. The CPU and RAM will be here by the weekend and I'm sure it will take me all weekend to get it all together and test it. Anticipation is killing me, I think I need to get out more   Well that's about it, sorry for the length. Let the grading begin....