I have both a 92S (my son's, actually), a 92FS, and a DP-51. The Daewoo and the Beretta are fairly different guns; the Daewoo is a good deal lighter.
Helpful tip: search ebay for Daewoo DP 51 parts. There is a dealer (Bama Gun parts, I believe) that has just about everything in stock, other than frames, slides, barrels and magazines. This includes pins, springs and every internal piece. I did have to replace the trigger bar on mine, as it was damaged. When I did, I also replaced the recoil and mainspring. Since I did that I've put around 500 rds through it, and the gun is definitely a keeper. Reliable feed, accurate, easy to keep on target. Trigger is very good to me, just an overall excellent combat gun. Before I bought it, I was on the fence about getting one, and only decided to get one due to a good price. Now, I'd have little hesitance to recommend one to anyone who likes or wants a conbat/duty nine.
Re the Beretta 92S- those are solid guns for a good price. I've found that aftermarket Taurus mags work just as well, as long as they have the notch in the base. My son's a righty, and the mag release doesn't bother him. I'm a lefty, and it's a hassle for me; but it's a nice-shooting gun.