I have a bunch of s&w and ruger wheelguns, springfield and colt 1911s, browning hipowers, a colt woodsman, a browning buckmark, etc., etc. I really enjoy shooting HKs. I have a usp 40 and a p7m8. When I go to the range, I usually take both along with my colt woodsman and browning buckmark (.22s are tough to beat for the economy). That being said, the usp usually goes with me on my out of town trips and the p7 is under the bed. I did go through the "bigger is better" stage once upon a time. The .454 casulls and LAR grizzley .45 auto mags got sold. I have several s&w and ruger .44 mags, but don't shoot them that often. Just commenting on this in that bigger isn't always better. The aura of the magnum cartridge will suck you in at some point in time - just warning you that they are loud, expensive and can sometimes be painful. The pistol bug is just like the knife bug - it can really bite you hard. Sounds like you are doing alot of research and that is the right way to approach it.