Honestly it depends on the quality of the castings or forgings to me. Either has to be done well. It seems every internet forum says that forgin is wayyy better than cast, but i think a frame cast by caspian will be better than one forged by a company like lorcin, and ruger parts are almost all cast and known for ruggedness.....I agree forged beats MIM though, but Kimber is pretty pricy for what you get there, and there 1 year warranty blows for the high end prices......Ive shot a ton of rounds through a base custom 2 however and it has run 100% with factory mags....i had two jams on a cheap promag or triple k or something like that but those are crap.
I think its funny the guy with the coolest 1911 collection ive ever seen is the biggest glocktalker ive ever seen but you know, jsut cause its a glock site doesnt mean that somebody with taste wont show up