I've hunted (or helped) in Unit 55 on 3rd and 4th season tags in 2005, 2006, 2010 and 2011. After the hard winter of 2007 the quality and quantity of deer was decimated in that unit. The genetics are there and it will come back in time, but the upper end bucks taken in 2011 were typically in the 160's. Of course there will always be a slug in there somewhere, just not the numbers there used to be. The governor's buck was taken in there a couple years ago, but it actually moved in from private land in Unit 54 well after the hunting season. I think it is gonna take a couple years to start seeing bigger bucks come out of Unit 55, and several years for their to be good numbers of quality bucks, assuming there is not another devastating winter.
If you are looking for a 160's buck numerous units in Colorado will consistently produce those.