Looking for a fast(ish) smaller sized SSD

[JJ Johnson]

I'd like to replace the boot drive in my home file server with an SSD. The OS that it runs is Win2k3 32-bit. I'm currently only using about 20 GB on the boot drive, so a 40-64 GB SSD would be more than large enough.

I don't want to spend much, so was thinking of maybe picking up a used, previous generation SSD. Any recommendations?