New build need advice on case, gpu and cpu

[#00c638]
Hi, I'm new to Tom's and I was wondering if anyone could help me on a few critical peices of my first ever gaming
PC! I'll list the components I'm considering and I would appreciate your opinions on which is best for gaming and value.

Case:
1st choice: Coolermaster Cosmos 1000
2nd Choice: NZXT Tempest
3rd Choice: Anything Lian Li

GPU:
1st Choice: 260 gtx
2nd Choice: 4870 radeon
3rd choice: 9800 gx2
4th choice: 4850 radeon

CPU:
1st choice: q9550 2.83 ghz
2nd Choice: e8400 3.00 ghz
3rd choice: e8500 3.15 ghz
4th choice: q9450 2.66 ghz
(I want to overclock and keep my proc for the next few years... also want best possible gaming performance for price)

PSU:
1. PC Power and Cooling 750 Watt
2. Corsair TX 750 Watt
3. Thermaltake Toughpower 750 Watt

Mobo:
1. Gigabyte P45E-DS3L (is this a solid board for OCing?)
2. I dont know, maybe ASUS...
(I dont plan on using SLI)

Thanks for reading and I'd really like to hear your opinions!

It's hard for us to give you opinions on value without a budget.

I'd say go for the E8400, whichever case you like, the 4850, or the 4870 (depends on your budget) and the PSU depends on which GPU, though 750 is a lot for only 1 GPU. If you get the 750w, I'd go PCP&C.

The P35/P45 are good boards. I have always had good luck with Gigabyte.

the value type:
Case:anything you like
GPU:l4850 radeon
CPU:E7200or5200
PSU: however 300w enough for most system.
Mobo: intel P45 chipset maybe is only best choice.Gigabyte P45E-DS3L is good enough.

Is your $1500 budget for your computer alone? Or are you gonna be buying your monitor, keyboard and such out of that as well?
If the budget is just for the computer you may be able to purchase a 4870x2, which would tear up your games. It however wouldn't be consider the best bang for the buck... If you find that too pricey I'd suggest the 4870.

For the case its your choice, but I personally would suggest the tempest. I love the airflow and looks of it.

I'd go with the corsair TX 750 its a great PSU and you can get it for a really reasonable price with rebate at newegg right now

for the CPU go with the e8400

And for the motherboard, if your certain you not ever going to want to crossfire or SLI, the GIGABYTE GA-EP45-DS3L will work fine.