I have a SA loaded (PX9151LP) and the new Ruger (just for a few months) - don't have a SW 1911 yet. The Ruger is a great 1911 for the money - I had a few FTF the first 50 rounds but after a good fieldstrip and cleaning, it has been flawless - all stainless for that price - you can't go wrong. That said, the SA is a better pistol - just the fit and finish and accuracy right out of the box - it is a beautiful 1911 - but about $250 more than the Ruger (which still isn't bad.) If you can swing a loaded SA, that's what I'd get - it could be your only 1911 and you'd be very happy 
Here's a picture of each of mine:

Here's a picture of each of mine:

