My humble and ignorant opinion is that the the Sig 1911 is more a a "me too" offering. Especially if you're looking for a SIG flagship, go for something that sets sig apart, the 1911 is not such a piece. The P210 would be great! My personal favorites are are the 226/229 Elite stainless. The 1911 is someone else's design that sig rebrands... still a great gun but not representative of sig design or engineering.
220c3-45-sss, nite sites & srt. only 40 made & sold by sportsman's warehouse.
229 Sport, 220 Sport Stock
220 ST, 220 C3 SSS
Have you seen the new POW/MIA 1911s or the Gadsden 226? I wouldnt mind eventually getting either one personally