Well I just bought a Crucial Real SSD C300 considering the new 25nm Intel ones are not cheap. I can only use it off a 3GB SATA connector for the moment but that will only impact sequential read speeds to much degree.
It has the advantages of being 6GB able, fairly cheap, 34nm Micron NAND chips and around for a year or more so the bugs it had originally are likely gone now.
Hopefully it will impress with the speed.
How is this drive going so far? I'm possibly looking at building a new computer in the next month and definitely want to move to SSD. I'm looking at the C300 first since it's the cheapest 250Mb+ SATAIII drive on the market so far and once they fixed the firmware issues it's been getting some ok reviews. The other options are the Plextor and Vertex 3 which are about $80 more.