Well, the performance is generally based on Sequential Access Read or Sequential Access Write, the higher the better and Read is more important than Write as your SSD will be doing at least 80% Reading or more, the rest is Write.
So, first question you will have to ask yourself is do you NEED 64 GB or will 60 GB cut it. After that, if they are all roughly the same price, go with the one that has the highest Read/Write Speeds. Then get two of them for Raid 0. Don't worry about which one for Raid, they are all created equal in that matter.
Okay, it just seemed weird to me that the 60 gb SSDs almost across the board had a higher read and write than the 64 gb in the $150 price range. I wanted someone else's opinion because i am paranoid about what potential reasons all of the 60 gb ones could be higher for (marketing trick, etc). I couldnt find an explanation, though i suppose it could be that they are all newer model SSDs (unconfirmed).
At any rate, no the 8gb net difference doesn't matter to me, I was just unsure of what the best buy was because the massive advertised speed difference.
The 60gb drives will usually reserve more spare capacity to be used for performance.
True, read is mostly what we do, and all SSD's read well.
I would look at a single 128gb ssd or intel's 160gb single drive instead of raid. They perform better because under the covers, they can read more nand chips in parallel. Onboard raid-0 if you will.
The possible performance hit with ssd's comes with writes and how the drive handles it. Those with trim support handle file deletions very efficiently. With a lot of write activity, a drive with few spare cells, or no trim support can get overloaded and perform much worse than a conventional hard drive.
This segment of the marketplace is changing daily. Units are getting better and cheaper. Be prepared for buyer's remorse when third generation units arrive this fall using smaller nand chips. The price/capacity equation may double.
The reason i'm buying an SSD (or pair) is because one of the disks my conventional disk raid 0 is going to fail soon I think (im not very concerned about risk on this particular raid). I was wanting to wait until novemberish to upgrade, but i was thinking if it gave me any more trouble I might upgrade sooner. If 3rd generation SSDs are coming out soonish though, I may try to wait.
(1) Pay more attention to the 4 K random read/writes than Seq.
(2) Vortex-2 and Crucial RealSSD perform better than Intel G2
(3) See link below for comparision Sata3/Sata6 (Has comparision to include Intel G2) http://www.anandtech.com/show/3812/the-ssd-diaries-cruc...
(4) While raid0 improves Seq read/writes it does litle for the more important Random read/writes. Some SSDs degrade considerably without Trim, The RealSSD being one of them (based on comment in article).