tactical is not about being cool.....
it is about staying alive!!
The perfect handgun for every one and every scenerio does not exist, and for combat they all lack power....
But the prerequisites, in my book, would be reliability, power, that is fit you and you shot it well and would carry it!
The tactical pistol is not a BBQ gun for fancy dress, or an excuse to stick out in a crowd by wearing your mall ninja outfit.
The workable, durable guns with a history of being chosen by elite units are a good place to start.
Power means as much thump as you can control...and the .45 acp dominates there. 1911's(my choice) rule, but some like the Sig or the Glock. The USP is not right for me, but if it works for you...use it! If I could not have a 1911, I believe I'd chose a Sig 245.
Nine's are acceptable, better than nothing, the ammo is widely available(though not too many of use are gonna be packing heat in some far flung country), and some find comfort in a pistol that has alot of rounds on board.
The P-35, Sig, Glock probably will take the awards here. Some will like the(aaarrrggg!!!) Beretta. But I'd rather have the big heavy bullet than a boat load of medium bore rounds, expecially if we are talking ball ammo.
Certainly cannot leave wheelguns outta the mix. For they are pretty reliable and favored by many...I'll let those many discuss revolver's, cause my experience with them is limited(I like the Jay frames best, followed by Ruger DA's). The are bulky and somewhat limited in firepower, but if you plan on hitting more than you miss, 5 or 6 should really do fine. But mostly yhe revolver is a specialty tool. The big magnums are for bigger stuff thatn man, the litlle snubbies are hard to control and shoot accurately, but easy to carry, and the medium frame .357's just do not cut the mustard for me(no matter how you slice it, dice it and sugar coat it, it is still a guzzied up .38!)
I have tried all of these and more, but return time and a again to the 1911 as the sweetest real world battle pistol, reliable, proven, flat, with lots of thump. It can be customized to fit you and your preferences.
We all make our choices is what we carry(if we can), so pick what is right for you..rather than what is percieved as cool. The opposition is not gonna say, 'my, what a cool gun you have', and they should not see it until lead is out the barrel anyway.
Jercamp45