For what its worth and what I've heard so far: 80 is highly overrated but there were a few really big bucks seen in the 2014 season. 90-1 and 90-2 are great hunts for average to slightly above average bucks. 75 has a lot of pressure but there's a lot of antelope to look over but you will not likely see anything much over 80".
The difficulty in assessing a unit I believe is that very few people are actually good at judging antelope. I'm decent at it but have likely passed on some bigger scoring bucks that had I known, I'd have big time regrets. You will hear people say they saw some 80" bucks but were looking for something bigger - in the entire state of WY last year, per B&C there were only 22 bucks officially scored that went 80" or better. That says a lot about how rare an 80" buck really is...I understand people don't want to give up hard earned scouting information but the reality is, you can't hunt or draw all the different units every year anyway.
Here's what I can report: 57 - one of the best units to hunt anywhere. Loved it the few times we drew. Never killed a booner here but saw several that, for one reason or another, we could not get them killed. One of the top 3 biggest antelope I've ever seen was in this unit. 58 - incredible hunt and wish I could have a do-over there. Killed a 79+ big pronged 15" and actually ran out of days because of a conflicting deer hunt in unit 102. Friend killed a 17" buck with a broken prong or it would have made B&C. There's more potential for a big buck in this unit than any other I've been in - you simply cannot cover it all. 63 - hunted it 3 times and loved the country but very hard to find anything over 75". Have a friend that has killed 2 booners near the lake but we could never find anything that big and it makes you wonder if all the really big bucks have been killed and that there's a cycle for replacement that takes a lot longer than anyone knows. 68 - great hunt and killed a booner here. Very low pressure and a lot of really cool places to look for bucks. Was very impressed with the quality bucks here. 74 - not as good as 68 and although a few bucks bumping 80 were seen, we were pretty sure they were not going to make 80. Some private land here can mess you up but it is fairly open to cruise around as you wish. Seems like it might be good later in the season with some bucks/antelope moving over from the west and up from the south.
I guess another very important consideration in picking a unit is that they are cyclical in nature - weather, harvest, winterkill, tag allocation, point creep, magazine reviews, etc. and that is what makes it hard to pick wisely. A guy hates to burn a lot of years of points for a unit that just does not have what you want in it for quality. some of the reviews on 60/61 are not that glowing and it's one of the best locales typically and has been forever.