Im in the same boat as the OP. Its between the newer RIA tac midsize (4.25") and the SR1911 CMD. Held both, the ruger seemed to be better quality but $100 more. It will be my first 1911, so I believe its a good base to learn the platform.
The only cons of the Ruger is the front sight breaking off eventually. But that can be replaced with a night sight.
The RIA, or the new 2011 model does look sweet, no gaudy billboard on the slide. Comes with fiber optic front sight and vz grips.
Rock Island Armory 51488 TAC 2011 VZ Midsize 8+1 45ACP 4.25"
Why would the front sight break off? Pretty sure they are using Novaks. The Rugers feel and look like well built guns. I shoot with a guy that is running one in lcal USPSA matches just to test one out. So far I am impressed.
Again...springer range officer 4" when it is released...compares very similar to a Wilson, but not as fancy. If they released it in a 9mm and 45, I'd have both.
Are there plans for a commander sized Range Officer? Seems like a 4" gun with big ol adjustable sights sort of defeats the purpose.