As I understand, the HW40/P3 handle is actually derivative of the Walther P99.
If you're looking for a gas operated airsoft pistols, Tokyo Marui, Western Arms and KSC are solid choices. Kuan Ju Works (KJ) makes some affordable full metal guns, which can be a bit rough around the edges, but good quality overall. For spring operated single shot pistols, only Marui makes decent ones IMO.
But if you're just looking for target shooting or plinking, airsoft guns might not be the best choice, since they are inherently not very accurate and the ammo is lightweight. (There are some spesific target guns though) IMO a pneumatic air pistol like the HW40/P3 or a similar model (Gamo makes another decent gun) might be a good choice. If you're looking for a more rapid firing pistol, a fine metal repeater modeled after the 92F is made in Germany by Umarex. It's CO2 powered. It is distributed by Beretta itself (as well as the manufacturer) and should be widely available. Gamo makes a gun based on the Bretta Cougar. It has more plastic parts.
Similar pistols are made be almost all the big airgun companies. They are operated much like a revolver actually, with a rotary magazine (usually 8 shot). The double action mode in many of these guns is pretty bad. I personally would get a revolver model (the German-made S&W replicas are fine indeed), so the action would correspond with the realsteel counterpart. Daisy used to make (still makes?) some blowback models I believe, but these fire bb ammo, and are not as precise or refined guns. The Umarex Walther PPK replica is similar, but better made.
Crosman offers a pistol based on their S&W autoloader air pistol replica converted to fire airsoft ammo. A sort of a curiosity, but it is powerful and uses CO2 cartridges opposed to the sometimes hard to find and expensive airsoft gases.
But as for the best out of the box Airsoft Beretta 92 replica, that'd likely be a Western Arms made gun. Out of your price range probably. A full metal KJ Works model would be my choice for value, they have several different berettas. Digicon makes a target shooting oriented 92F, non blowback, no hop-up, might be hard to find. KSC makes a full auto M93R, make sure it's the newer improved II model.