Well I can say were happy with our 2015 Lance 1050S, actually were impressed with the fit & finish on ours. Something that I couldn't say back in 011 or 012, they seemed to finally step up to the plate with the counter tops, new cabinets over head by the bed area.
With that said, I would be hesitant about buying the 1172 because of the slide issue's that seem to be a problem. Maybe with the mfg change of the slide mechanism it maybe fixed, who knows. My own personal opinion is that I personally didn't want a TC with more than one slide. One is enough of a concern for me!
I guess if your going to stick to the main roads, then 2 or 3 maybe ok, but I just feel that when they start "cutting out" all the walls & adding slides you loose some structuall integrity. I don't care who build them, just MHO. Good luck with whatever one you buy!