if you want to train like 40xs mentioned, i would not go with the elite due to the beavertail. i find it gets in the way. look into the the extreme, it still has the rail, SRT, short reach, and the front cock serrations.
i used my 226 in a self defense class, and i was WAAAY left and low for the DA trigger pull. but and hour later with the instructor, i could see the improvement on the DA/SA. and that was only an hour with 50 rounds.
also, sigs tend to multiply like rabbits. i started with one last christmas, and now have 6, and am continually looking. i always wanted one, but was not willing to pay the price. my wife surprised me at christmas with a 226 scorpion 9mm threaded barrel. first it is the 226, then a 229, then a 228, then a 938. not only is it enough to have the modern renditions, you find yourself going after the west german 226, 228, 225 (got one). and don't forget about adding a sig 1911.....
as far as the QC goes, i have noticed it has more to do with the new models they are making. when i read issues with a newly manufactured sig, i do not recall very many p-series pistols (226/220/228-9. the 227 is too new). they have been making them for the last 25ish years.
a good friend of mine is a glock 45 fanboy. he did 4 years active duty infantry, made it to sergeant, and 2 years in the reserves when he got home (if this means anything to you). he tore me a new asshole when i bought my first 226. "i can have 2 glock 45s for the price of one sig, my glock is a tool and i can treat it like one, if it breaks and it will not, i can just go buy another for $450 (?). your sig, that's over $1000 blah blah blah."
he has held my sigs, and did the dry fire/rack the slide/target acquisition, etc routine, and just told me i was dumb. when we were finally able to get together and go shoot, i forced him to try my 226 9mm. he F-ing loved it and cursed me for having them because he wants one now.
i am not a glock hater, it might come across that way.
shoot/like what you want; M&P, glock, XD-XDm, 1911, 45, 9mm, .380, revolver, striker vs hammer; and fuck 'em if they don't like it. it does not affect my life one bit.
all we can do if give you our opinion and experience, and you have to sift thru the BS.