I "grew up" on 1911's in the Army. I was infantry at first, even did a stint as company armorer fixing rifles, pistols, etc. Fired plenty of Colts during my time and even picked up a Remington Rand M1911A1 with a WWII vintage since then. Everything I've heard from folks buying the Ruger 1911 has been positive, not a single thing negative. Have not had the privilege to fire Ruger's version, so I cannot provide any 'personal' input.
I use my 1911 as backup home defense. One thing about a .45 ACP - one hit from a 230 grain hollow point and the other guy isn't going to be getting back up.