Have owned 3, sold one. Not sure if I'll buy any others unless they come out with something truly new that addresses the common HK complaints.
USP45f- Best double action .45 ACP full capacity pistol on the market IMO. Smooth shooter with the dual recoil spring assembly and the steel reinforced polymer frame. Much more accurate than I am able to milk from it. With 13 rounds on deck and a weapon light, it makes for an excellent HD pistol, if your situation dictates a handgun is a better choice than a long gun.
P7 (PSP)- Many winning virtues with the pistol, and in my opinion, the heat generated is the only real downside. Ergonomic, slim bodied and a natural pointer. Beautiful constant pull trigger. Low mass slide, low bore axis. Lefties like it. When I carry an HK, this is the one.
P2000v3 9mm- Nice gun, but the absence of the safety lever found on the USP makes it a DA/SA option only. Compunding the issue, the factory trigger pull in both DA and SA are not in the shooter's favor. Customizable back straps make it fit almost any hand size. Lots of recoil and muzzle flip, more so than any other 9mm I've ever owned. I attributed it to the tall bore axis and the single recoil spring & bushing setup, which I don't think is as effective as the dual recoil spring setup of the full size USPs. This one got traded off b/c while it was a good carry pistol, I personally find the Glock 19 is a simpler, more efficient 9mm compact in all areas.
With the current lineup, I don't see myself buying any more HK pistols other than the two I already have. Unless, of course, they come out with a striker fired pistol with a nice 4-5lb constant trigger pull with a lower bore axis and a lower mass slide. I guess what I'm asking for is HK's version of the Caracal. That would be a real winner in my book.
A lot of people I've met that complain about firearm prices have been seen leaving in their $40,000+ vehicle with a $600/month car payment. Irony; to each their own.