.45 compact with stainless slide.
It's a great gun for carry, it shoots like a full size, and has better sights than most autos.
The trigger needs work, break-in, or I hear the new LEM is good, too.
Mine has broken-in quite nicely.
There are a few other guns in the same class.
Star PD, S&W CS .45, bobtailed commander.
My bobtailed commander is a 10mm dan wesson, and was about $900 (Includes very good nights!)
Phenominal shooter, a little heavy for carry.
My H&K USP compact (Stainless slide.) was $830 and is worth every penny.
I guess there is only one kind of nights available for it.
The smith chief special series of guns are very competent, and should be included in any compact .45 discussion. I like the CS9, but I hear the CS .45 rocks as well.
About $600
Now the value leader, the STAR PD.
It's a light weight .45 that looks like a lightweight commander, but takes it's own mags, and the trigger and grips are different from 1911s, but appear somewhat similer.
These can be had for $300 or so online, and are great shooters.
They aren't as durable as any of the above choices, and I wouldn't shoot +P ammo, or run 100 rounds of practice ammo through it per day, but it's a great budget carry piece (Very light, you'll forget you have it on you.), and mine shoots like a dream.
Do yourself a favor and check one out.