It comes down to what you like in terms of trigger...and what fits your hands the best. All of the DA/SA triggers - and stryker guns - will move thru an arc - as they move on a pin. 1911's of course - move straight back and forth in the frame ( no pins). Obviously very different feel in terms of how they break, reset, length of pull, etc...
Nothing wrong with a Sig 226 ....but the DA/SA trigger is not my favorite in a gun. ( I have one in all stainless, DA/SA trigger..) good solid gun.
Like someone else said, don't overlook a good 1911 in 9mm...especially in a steel 5" gun. There are quite a few to choose from...Colt has a couple of models, Springfield has a few, Sig has a couple, etc -- or you can go clear up in quality to Wilson Combat ( CQB model is very popular )...but lots of options out there. Wilson Combat 9mm Protector model, 5" gun, all stainless is one of the finest guns I own.
Before you buy - rent or test fire as many as you can find.