GlobalWin CAK38s. That's what I'll be running once the processors get here. I put one on using a duron chip. (Never booted it, just put it there as a spacer). It fit fine. These HSFs are a bit on the heavy side, but they will be fine.
The TiaSols fit fine as well. Those are the only ones that I know for sure work.
Good luck!
EDIT: I must caution you to take your time! There are a lot of capacitors that are EXTREMELY close to the ZIF sockets. Just be VERY careful. If you can, install the HSFs when the motherboard is outside of the case. It makes it MUCH easier to work with.