I like the idea of VAX 77 (yes, it's actually 77 keys) because it starts on an "A", which is quite rare. However, it's expensive, and does not have a piano-hammer action. It's quite a special product that folds in the middle.
There is also the CME UF70 (also starts on an "A"), however it's a semi-weighted action. (the UF80 has 88 keys and is a full weighted action)