I'll throw another vote in for the CZ 82. It can be had for about $220, is very well made, good sights and trigger, accurate and easy to shoot and maintain. Spend the extra cash on ammo, good holster, gun belt and a spare mag or 2.
The CZ 82 is a great value right now and you's be hard pressed to find any negative reviews or arguments against it. It really is a great "budget friendly" defense pistol.
If I was on a limited budget for gun, holster, belt, ammo and so on, my first choice would be the CZ 82. If my gun budget was $400 and I could put more money into ammo, belt, holster etc... I'd probably go for a used Glock, XD or M&P, because of availability and popularity.