Over a period of of 30+ years, I have owned 1911 type guns in 9MM by Colt, Kimber and Springfield. I have handled, but not owned the STI 9MM Trojan and U.S.P.S.A. models. The STIs seemed to be very solid, well fitted guns.
The standard Colts use the traditional unramped type barrel. In my experience, these sometimes require a little tuning to be 100% reliable in 9MM. I have had better results with the more recent pistols that use the ramped typed barrels.
Last year I purchased a new Springfield Loaded Target 9MM. Nice looking, but sorry to say, not a very good gun in stock condition. Pretty rough overall; some of the internal machine work just not right, barrel loose ( bunch of up/down and fore and aft movement in breech area when in battery ), unreliable with several types of factory ammo, one of the most inaccurate pistols I've owned. I purchased it with custom work in mind, so wasn't too dismayed. I see Springfields praised quite often, so I guess I just happened to get one that wasn't as well put together. I have handled another new Loaded Target 9MM in a gun shop since purchasing mine. Can't say about reliability/accuracy obviously, but it appeared to be rougher than mine, with the same issues. Years ago, my early Springfield Trophy match had to go back for a new slide under warranty. More recently. my brother's 9MM EMP, went back for several issues. Came back with issues corrected, a new slide and I forget what else. Both those guns were very nice after the serious warranty work. I guess we just haven't had very good luck with Springfields as received...
I currently have a Kimber Target II 9MM. It, and the previous Target IIs in 9MM and .38 super I have owned, were just excellent guns from the beginning. All were/are 100% reliable with any ammo I tried,accurate, well fitted and finished, barrels/slide/frame fitted very well for production guns, etc. None of the infamous MIM patrs broke in any of them.
I have owned Baer and other higher end type guns, but not in 9MM. I suspect those guns chambered in 9MM would be very nice indeed.