Hi all, new guy here from Ca. Looking to get my first HK pistol, probably a full size .45 acp for range and HD only, not carry. I regularly see used USP 45 fs for around 700, but HK 45 is difficult to find and expensive when found, 1300 and up to 1700 new. Are the improvements of the HK 45 worth double or triple the price of a used USP? Thanks for your help.