I have the Intel you mentioned, but the 80GB version, also this one
SSD 90G|CORSAIR CSSD-F90GB2-BRKT $189.99
I use these for the OS drive (C:) on a couple of servers...
Looks like you want more space since you will only have the one drive. I would look at what brand you would get if you got it from Dell, maybe get that brand if you really want to play it safe, but probably most brands are going to be fine.
Really just about any decent SSD will be amazing compared to a SATA II laptop drive (5400RPM or 7200RRPM). You will read at 150MB/s to 300MB/s and write 70MB/s up to 230MB/s for the larger newer, more expensive SSDs.
The next crop of SSDs (Sand Force 2000+ and other technologies) that we will see will be more like 500MB/s for both read and write, and will make no sense for a SATA II port which maxes out at 300MB/s. So unless your PC can use a SATA III port, get the best bang for the buck now.