I havnt been paying much attention to SSD's as of late but I currently have 2 in my system. OCZ Vertex2 and OCZ Agility. I would suggest choosing an OCZ because they are extremely helpful on their forums and even sometimes they customize firmware for a few individuals who are having problems. Yes, you read that right. OCZ have gone out of their way to create a firmware build for just a handful of individuals. Last i read, Intel had the fastest drives but for the price it doesnt make sense to buy them. OCZ is by far best bang for buck.

i give you a tip wait till crusial and intel come whit there next gen ssd because the prices of the other ssds will fal than ACZ has the fastest one atm but we shall see what the price will do if there come concurrence.

Yeah it seems that I have to wait for cheaper SSDs.
But what about the RAID 0 situation above?

eum i dunno look for some revieuws. but the raid will probably make it a bit slowerbecause of the proceesing power that it needs to do.

Raid 0 with ssds is one of the best things ever. I have 2 corsair 64GBssds in raid0 and I am getting read speeds upwards of 700 megaBYTES per second. With one of these I get around 350-400MB/s so they scale quite well. Two SSDS in raid0 will always run faster than just one because of the way raid0 is. It splits up the data into 64KB (or whatever stripe size you choose) stripes so that for a 128KB file each ssd gets half. When it comes time to read it each one only has to read 64KB instead of one having to read 128KB, so double the speed. As they are now, consumer ssds (even sata 3 ones) are barely breaking sata 2 standards