Lets see...
1/72 Valks: 4 (one of each from Macross Plus, and the FP YF-21)
non VF-1 1/60 Valks: VF-0A, VF-21, VF-11
v 1.0 VF-1s: 6 (including the Elintseeker, and the armored VF-1J)
v 2.0 VF-1s: 3 (at the moment)
1/48: 2 including the armor set and the strike set.