w00t! updated! finally got numbers for 172 watt TECs (from silverprop's e-store) and used numbers from NoL (who got them from eBay) for 320 watt TECs, so those could be wrong :-P
this was supposed to get updated last night, but i left my TI-83+ in school...
if anyone wants them, I'll but the exact equations i used for each TEC in.