I can't answer specifically for those two brands, but I can certainly muddy the water a little. Folks looking for used travel trailers really seem to like the old Sunnybrook line, especially the Harmony models. All aluminum superstructure, Gel coat fiberglass exterior, quality cabinets, etc. (now owned by Winnebago).
Here is an example in Fresno, It is still labeled Sunnybrook, but it may have been made right around the time Winnebago took over. The Remington name is not as well known, but I believe these to be a very well built value for the dollar, and if cost were similar, I'd get the Sunnybrook/Remington long before either of the other two manufacturers and never look back.
FWIW, the Sunnybrook trailer designs live on in the Minnie and Minnie Plus at Winnebago and seem to have a good following.
Check it out before you make your decision:
2013 Remington Ultra-Lite 2500 FBSRemington 2013 brochureEdit: I just saw what your two preferred models are going for in Cali, and that they still have new ones in inventory? If your budget allows, check this one out. Why?, the Ultralite is being phased out in favor of the Minnie Plus. This particular one has everything upgraded already to meet/exceed what comes on a new Minnie Plus. It also has the boring old clay color (which I actually like better). Maybe there is a deal to be had here? Check out the options and compare.
2017 27BHSS Winnebago Ultralite