My wife wants a 4 inch barrel, .22 revolver to compliment her .38 Spl S&W for practice and informal target shooting. The Taurus Tracker looks good, but its only offered in a 6 inch barrel. The Taurus 94 is an option. Ruger no longer makes the SP101 in .22, but they can be found used. Of the bunch the S&W 617 seems like the best, but also the most expensive at around $500. I think she'd be fine with a Taurus 94, but I'm a big fan of buying quality. Thoughts?