As for further models you can add my EquipOptimizer, which includes my Enh model.
http://code.google.com/p/wowequipoptimizer/
The other shaman models are just fine, they should give you correct results.
The holy priest model is fine too, the shadow model is not finished
The protection tank model is not completely finished, but the results should be ok.
Rogue isn't even started.
It has some certain problems with selecting the right gems and it has some problems if you actually lock too many item slots, you should always leave like 2-3 open, otherwise it might as well crash.