I haven't shot the Ruger, but the 1911 is a solid design pretty much no matter who makes it.
I shot my buddies Kimber 1911 a couple of weekends back - I REALLY liked it. I know the Kimber aint cheap, but how many Pistols are you going to buy? I am sure this Ruger is a good pistol as well, but at $800 MSRP you are in the same ballpark as what the Kimber's go for.