if you went for the t-halls def go for the 171 if you want bigger. going smaller for skis is never a good idea i think.
i have the domains and i love them. but for high speeds they are a little tricky. they are kind of like a snowboard in the fact that you have to be on edge at high speed cause of the zero camber and rocker they have. but for rails and shit they are bomb. sooooooo flexy and fun. and they hold on jumps cleanly.
the walls are completley different. sooo much stiffer than the domains. much more for jumps.
ninthward is gonna be skinnier than the domain and i think the walls. but i think they have similar flex to the walls if not stiffer.
no idea bout rossi. dont like them.