I have bought two pins based on my wife's preferences, an Aztec and a POTC and she rarely plays anything else in my collection. Last time she had friends over we didn't have POTC and they tried others (at the time -AC/DC, ST, Mustang, Wizard, Skylab) but stuck to Aztec. She has the same group visiting next month and it will be interesting to see what they play with my new line up (I suspect EATPM will be a hit).
At TPF she only went back to one pin over and over and that was WOZ (not the first time she has gone back to it when available). I think she wants one but just can't quite justify the prices. She played along side me most of the weekend but I never heard her say there was any "must haves". When she took off solo I would find her trying out EMs but most were set up slower than she prefers (mine are steep and fairly fast).