I just bought this 80GB from Newegg for $189 ( Newegg.com - DANE-ELEC DA-SDM25-80G-N-T-MK 1.8" with 2.5" adapter SSD Migration Kit - Solid State Disks
). They had it on special with a coupon. It is a first generation Intel x18M meaning that it does not support Trim. That is OK for a Vista installation because Vista does not support Trim either.
For Win7, which does support Trim, I suggest a 60GB OCZ Vertex which sells for around the same price (if you keep watching the Newegg specials). Just make sure it has Firmware level 1.4 because if it is backlevel, you have to flash it (which is a daunting task). I talk from experience - LOL.
The advantage of the x18M is that it fits into a netbook because it is 1.8". The OCZ Vertex is a 2.5" which fits into a Notebook. But for both there are brackets to adapt them to 2.5" or 3.5" bays respectively.