''Another hesitation on the D7000 is not having the in camera focus motor, I don't want to limit my lens choices''
Sir
D7000 does have a built-in focus motor which means all Nikkor AF lenses as well as AF-S and other lenses would work like a charm. Your choice won't be limited. Go for the D7000 or wait for some time until the D7100 is realeased if you are not in a hurry.
D7000 is the best camera out there among the 3 you listed, D90 is a step backward. Better go for D7000.
I hope it helps.


