I like the sandforce SF-200/2500/2600 based SSD's. The Vertex 3 would be my choice in the current lineups. I run two of the older SF-2000 based Vertex 2's in RAID0 currently. If you get a latest gen one don't bother with RAID, on board RAID controllers just don't have the bandwidth to take advantage (AMD 8x0/9x0 and Intel ICH10R only have a pcie 1x lane).
I would wait a few months, prices have been dropping and will continue to drop, the longer you wait the better it is to buy.