Finch said:
One thing about the Springfield that worried me, the slide stop was so stiff on the new gun that I couldn't operate it without pulling back some on the slide....
That's just a sign of a strong spring in the magazine.
The tension on a slide stop in a 1911 is the result of the magazine follower pushing up from below. Once a loaded magazine (with at least 1 round) is inserted and seated, there should be no force applied to the slide stop.
I have both, a 6" GP 100 and a Springfield 1911 Mil-Spec. I like each for its own characteristics. For the majority of general shooting, I use my Buckmark (cheap ammo), though both the .357 and .45 come with me when I shoot. For home defense I use my Mossberg.
If you like to modify your guns I would suggest the Springfield. There is so much you can do to a base model 1911.
With any semi-auto handgun you may have the failure to feed or failure to eject malfunctions. If you don't want to contend with those, get the revolver. With a revolver, if it doesn't go bang when you pull the trigger, just pull it again.
As WWB noted, you'll be getting both eventually, you just have to choose which one to get first.