For a 'ground up' custom 1911, maybe Jo Dlask, for a full tune with specialty metal work (fitting for accuracy etc.) perhaps Barry at Bits of Pieces, Gunnar (Armco) isn't, from what I hear, doing as much full custom work as he once did, but he still does the 45-08 conversion, and does trigger and reliability work second to none (his trigger jobs are some of the best you'll ever find, IMHO). These are the guys in my area (BC). Any one of these three are highly capable of building an outstanding 1911.