A million different people will give you two million different recommendations. I guess I'd ask a few questions, or suggest you ask yourself if you haven't already.
Will this be your first handgun, or just your first one for concealment? If you're new to shooting, you'll want to shoot around with some rentals to see what seems to fit more naturally in your hand.
Unless you're already quite experienced at shooting, I'd echo the advice to not make your first carry gun a pocket-sized pistol. The little Bodyguards (which I have, and like), and LCPs and the like are NOT easy to shoot well, nor pleasant. I probably only shoot 10 rounds of .380 for every 100 of 9mm (and every 200 of .22). Saves money and lets me practice more rounds with guns that don't leave my hand sore.
If you are already experienced with a particular type of pistol, then a smaller version of that is probably your best bet. Keep it consistent and stay with what your muscles already remember. Used to shooting a 1911? Then a "mini-1911" sort of gun from Sig or Kimber might be your best (and most expensive?) bet--same feel, same proportions, same safety, etc. Or the Springfield XD line--grip safety and similar proportions to a 1911, and will feel pretty familiar.
Already shoot Glocks? Get a smaller Glock.
Used to a DA/SA gun like a Sig 226 or Beretta 92? Get a smaller version of the same, like a Beretta PX4 Subcompact.
If none of this applies and you're new to shooting, my advice would be to get more practice and more training before you carry a gun anyhow. A lot of ranges have classes that let you try multiple guns while also practicing some skills, so you get familiar with what fits. At least try the major striker-fired players, like Glock, S&W, Springfield and Ruger. These guns all have lots of aftermarket support and are easy to find parts for, and are not terribly expensive. Try out the larger sizes first to see what fits, and when you've found something that sings to you, then try the smaller variants and work from there.
In the end it really won't matter much whether you walk out with a Glock, Beretta, Springfield, Sig, Ruger, whatever. They're all well made and will last forever. They all shoot bullets and reliably go "bang" when you pull the trigger. So long as you've found something you'll enjoy training with, you'll be fine.
*** Last note ***
Don't automatically think that you MUST have a single-stack gun in order to conceal it. Most of the single-stack 9mm's are about 1" wide, and their double-stack brethren are barely 1/3" wider and not much heavier (unloaded), but have twice the capacity and usually are easier to shoot because they fit your hand better. My XD Mod.2 Subcompact is 0.3" wider than the comparable single-stack XDs and just as easy to conceal, so long as you get an unobtrusive holster that pulls the grip in close to your body.
Will this be your first handgun, or just your first one for concealment? If you're new to shooting, you'll want to shoot around with some rentals to see what seems to fit more naturally in your hand.
Unless you're already quite experienced at shooting, I'd echo the advice to not make your first carry gun a pocket-sized pistol. The little Bodyguards (which I have, and like), and LCPs and the like are NOT easy to shoot well, nor pleasant. I probably only shoot 10 rounds of .380 for every 100 of 9mm (and every 200 of .22). Saves money and lets me practice more rounds with guns that don't leave my hand sore.
If you are already experienced with a particular type of pistol, then a smaller version of that is probably your best bet. Keep it consistent and stay with what your muscles already remember. Used to shooting a 1911? Then a "mini-1911" sort of gun from Sig or Kimber might be your best (and most expensive?) bet--same feel, same proportions, same safety, etc. Or the Springfield XD line--grip safety and similar proportions to a 1911, and will feel pretty familiar.
Already shoot Glocks? Get a smaller Glock.
Used to a DA/SA gun like a Sig 226 or Beretta 92? Get a smaller version of the same, like a Beretta PX4 Subcompact.
If none of this applies and you're new to shooting, my advice would be to get more practice and more training before you carry a gun anyhow. A lot of ranges have classes that let you try multiple guns while also practicing some skills, so you get familiar with what fits. At least try the major striker-fired players, like Glock, S&W, Springfield and Ruger. These guns all have lots of aftermarket support and are easy to find parts for, and are not terribly expensive. Try out the larger sizes first to see what fits, and when you've found something that sings to you, then try the smaller variants and work from there.
In the end it really won't matter much whether you walk out with a Glock, Beretta, Springfield, Sig, Ruger, whatever. They're all well made and will last forever. They all shoot bullets and reliably go "bang" when you pull the trigger. So long as you've found something you'll enjoy training with, you'll be fine.
*** Last note ***
Don't automatically think that you MUST have a single-stack gun in order to conceal it. Most of the single-stack 9mm's are about 1" wide, and their double-stack brethren are barely 1/3" wider and not much heavier (unloaded), but have twice the capacity and usually are easier to shoot because they fit your hand better. My XD Mod.2 Subcompact is 0.3" wider than the comparable single-stack XDs and just as easy to conceal, so long as you get an unobtrusive holster that pulls the grip in close to your body.