KWC and UHC are both Taiwanese makers of Airsoft guns. Cybergun is the former 3PSA which is a marketer (who made the deal to allow trademarks). Trademarks, even hokey cobbed up ones like the HFC guns I have (I recommend staying FAR away from HFC!) are cooler by far than no trades at all (like a UHC that isn't Cybergun). But that's not the whole story either!
The gun most recommended by airsoftretreat.com for newbies is the UHC M9 Heavy (Beretta 92F). It has some stuff on it. And the UHC CZ75 I have, older model I think has 'model 75 cal. 9para' on the slide.
The CZ75 is said to be fragile, and at least in my case, the M9 IS fragile.
At Academy the 226 is Cybergun/KWC and the 228 is Cybergun/UHC.
The 226s at Atlanta are heavy models of the same Cybergun/KWC. The 228 at Atlanta is a non trademark version of the C/U 228 at Academy, same weight even.
The 226 and the K99 I mentioned will both shoot much harder and possibly more accurate than the 228. The only trade-off is they each hold 13 or 14 max, while the 228 holds around 24. The KWC mags CAN be easier and faster to load, but in my experience have a habit of spewing BBs if not careful. The UHC mags load one at a time like a real steel gun.
If it is to have outdoor battles, the KWCs probably rule. If they are just for plinking, the UHC would likely do fine.
That said... if you want a DEADLY accurate Airsoft Pistol, a third generation Marui, either 1911A1, MK23 Socom, or S&W PC356 are the gun for you. I got lucky and got my PC356 for very little more than a lesser gun shipped. If you look around you might get luck. I found mine at newworldwarehouse.com
Good luck! Christmas is getting close!