Just joined website, so first post/response:
Just picked up my Ruger SR1911, it had scratch/damage to underside of slide (discussed further on INGO), they are saying cosmetic only, won't fix.
My Springfield Loaded Champion and Range Officer have been outstanding. Purchased Loaded Champion used, had several issues, however, unlike Ruger, when I called Springfield, they had a box there next day, postage paid, took < 2 weeks for repair and return, again, no charge. Firearm flawless after.
Just sold Sig 1911 Traditional, really liked it as well, only sold it as I like my HKs better (not 1911 style firearms), and saving up for another HK.
Based on my limited experience: Sig or Springfield.