Wheelguns are fun, reliable and easy to maintain. I have had a bunch of them over the last 40 years. As far as the G17 of the revolver world goes, I would have to say either the S&W 686 or the Ruger GP100 in .357 mag. are the best choices. Both are former LEO weapons, well built, accurate, versatile and will last a lifetime. If you want something smaller, the Ruger SP101 is hard to beat and can handle .357 mag. better than the S&W J-frames. An honorable mention should go out to the S&W K-frame .38 spl. While not my first choice for SD, they are sweet shooters and great all around fun guns.