Well, I actually founs a shop here that had both so I could compare the two side by side.
Long story short, the colt is out.
The reasons are, springfield TRP $1080....colt GSP $1450
The colts slide to frame fit was sloppy, (TRP was tight and smooth) colt had more MIM parts and a plastic mainspring housing. Springfield had full length guide rod and novak night sights, colt does'nt. Springfield had front strap checkering, colt did'nt, springfield was nicely dehorned, no shap edges, colt was'nt too bad, but not as good. The finish on the TRP was flawless in armory cote, while the colt was polished blued and the finish on the slide was uneven in several places.
The overall fit and finish of the TRP was much better than the colt.
I know fit and finish can vary from time to time on all weapons, but it's pretty clear to me that for the money ($400 difference) and when you add up all the extras there are on the TRP that the colt does'nt have, it has made my choice very easy. A new TRP will be coming home with me very soon !!
Now...whether to get the stainless or armory cote.....