I have to disagree with you, and I'm sure many, many other TFLers will as well, that "revolvers are no good for carry". I wouldn't feel underarmed with six rounds of .357 magnum and maybe six more in a speedloader. For a DEFENSIVE weapon, that's more than you'll most likely ever need. If I HAD to be in a gunfight, and for some reason couldn't bring a long gun, then I'd want a 9mm with a whole friggin' bunch of 20 round magazines. I do plan on getting a revolver, except I prefer my revolvers big (thinking of Ruger Redhawk, or even a Vaquero) and as such it would be kind of large for CCW, in most cases, and heavy.
That said, I came to the decesion that I wanted a semiauto handgun with the highest capacity possible, and that lead me to 9mm. It's not out of any great need I feel that I want 15+ rounds, so much that I think its neat-o-torpeedo, if you will. Coolness factor plays big with me. Besides, "high-capacity assault pistols" make the Brady Bunch wet their little tighty-whiteys, and that's reason enough right there.
The only point of hesiation I have on the Beretta is its size. It's bigger than a Sig and bulkier than a 1911. On the other hand, I'd probably get a Kel-Tec 9mm for carry. Small, light, takes S&W 15 round magazines.
The Glock better than the Sig? Are you trying to start a feud or something? Let us hold our breath and hope the Swiss didn't hear. They're a bit more touchy on such matters than the Austrians.
Personally, I'd take a Sig 220 or 226 over a Glock 21, 17, 22, etc. any day of the week. The Glock's grip does NOT fit my hand, and I don't like the trigger. Just personal preferances, mind you, but I'm not going to spend $500 on a gun that I don't really like.