Although the poll is now closed, I cast my vote for the revolver. My first handgun was a revolver, a Colt Python that I bought in 1984. I still have it if that tells you anything. I recently bought a Sig P250 subcompact for its capacity and revolver-like trigger. The trigger is every bit as smooth as a good K-frame, and it's lighter than any revolver I've owned, but the pull is about 1/4" longer than my favored carry gun, a 2" model 64. Now, 1/4" may not sound like much, but I've got so much trigger time with revolvers that it really throws me off.
The other thing is that with my model 64 I can extend from high compressed ready with my eyes closed, and when I open them, the sights are aligned and on target--every time. The Sig? Not so much. To be sure, these are both training issues, but they don't breed confidence.
What isn't a training issue, however, is that the roll pin that holds the firing pin in place tends to back out with extended dry firing. I'm going to contact Sig, but I will probably wait if they want me to send it back as I've signed up for a defensive pistol class in March (no wheelguns invited), and the only other auto I have that would be realistic to carry is a Colt Commander. And that's not something I would feel comfortable carrying until I train with it a WHOLE lot more.