I'd say that a Glock 18 or 18c would be pretty darn desirable: for me anyway. I can't begin to guess how much one would cost though.
Damn you beat me to it. I would say a Glock 18, but there is no cost to it, since it is not available to citizens without certain ATF licenses.
For me it is a 26. I am getting one with a grip extender on the magazine and night sights for my carry weapon, a slight bit smaller than a 19 and has the same capacity from what i know. 10 rounds with the extender, if you cant hit something with 10 rounds you need to go to the range, its the user not the gun. Plus the 26 accepts the 33 round 9mm magazines.