NEW! Fuji IGBT Module 1MBI300F-060 600V 300A - eBay (item 190318302428 end time Apr-21-11 09:37:55 PDT)
found these. i bought four of them cause they seem dirt cheap, especially for NEW devices. also, the switching times on them is pretty nice. few micro seconds on and a few more to turn off. should be able to run at 20 khz pretty easily. (would like to stay out of the audible range.)
eight left on ebay if anyone is looking for igbt's. i think they'll work nicely