is there another model of SSD in that price range I should look at or just be happy with what I got?
Enjoy it - it's simply more than you need but I suspect it would be hard (impossible?) to find a modern Sata I device.
I did reinstall XP on the hard drive after doing a format and it runs fine, albeit a pain to get running compared to installing W7. I guess XP did melt down, never had that happen before. I think I will put W7 on it and see how it runs.
I've had W7 on an X61 for quite a while and it has been a pleasure. There's no question about W7 running well on machines of this vintage.