Go with the Ruger. I had one for years, and it was completely reliable and VERY accurate. It looks like a heavy weapon (appears large), but it's not really all that heavy for a full-size .45 ACP (Colt 1911 weighs 5 ounces more). Kinda thick, though, and concealment holsters might be hard to find.
And on your concern about it "holding its value"; well, I can pretty much guarantee you can get $225 back out of a lightly-used Ruger P-90 in a private sale.
You break one spring in that Llama, and you're all done; parts are usually hard to find for imports that weren't made and imported for many many years. Ruger will be able to repair P-90s for decades, not that I think you'll be able break anything on it -- even if you try.
Here's an article on the P-90:
Not highly refined or super smooth, but they are great guns, in my opinion.