I'd agree, in general a well made 1.5" width, lined(support system) belt will work great for carry-duty type sidearms(SIG P229, Glock 17/19, Commander 1911a1, DA revolver; 4" bar).
Good brands include Blackhawk, 5.11, The Beltman, Kramer Leather, Galco.
Ken Null, Milt Sparks and Mitch Rosen sell dress/concealment belts.
Rosen's belts narrow to 1.25" in the front.