Wife and I drove the RTV900 and we both liked it. It is larger in size than we both expected, but it does not seem that much bigger than the Polaris Ranger I saw earlier in the week. Looking at the specifications for the XUV it is not much smaller, but I don't know if it is enough. At this point if we want something a bit smaller we would wait on the RTV500 or take a look at the Big Red. But, since those are gas and we are looking for power on hills and not speed or recreation, it may be that the RTV900 gets the nod.
Thanks
ps: the 1100 does not have much value for us since heating and A/C do not seem to offer us much for our climate.