I have a Ruger SR9c, but the mags are not cheap, my wife likes the way it feels also. The 17 round mags extend the grip, and the wife liked it better than the 10 round mags.
I had a Kal-Tek 9 mm, but it was a handful for my wife, as it was light and the grips was very thin, mags we not very expensive, but the capacity is low as well.