I have the Glock 40 MOS with an RM06 and love it. I originally wanted a 6" Witness Hunter 10mm, but I have less in the 40/RM06 than the iron sighted Hunter would've cost. My buddy is picking up his XD-M OSP 10mm this week. He'll have a Vortex Venom on his. It has the advantage of already coming with optics height iron sights (which I had to add to my G40) and a threaded barrel if you want to add a suppressor (he will). Hopefully we'll be able to do a side by side comparison soon.
If I were to go with a 1911, I think I'd want a higher end gun, so a Dan Wesson would be my top choice.
@Glocktogo Did you ever get to shoot that OSP? I'm deciding on another 10mm.