ORIGINAL: VAhuntr

I like Glock but you will have trouble getting a new one for under $400 unless you are able to get the LEO discount. I carry a Beretta as a duty weapon every day and would not hesitate to buy a Beretta, although it will cost more than $400 as well. You can also add Sig Sauer and H&K to the same list of excellent pistold.

Your best bet would be to go to some gunstores and handle different pistols and pick one that feels good to you. You may feel the difference between the pistols and find one that you are willing to spend a little extra for.