Colorado OTC Archery Elk

Hey guys, glad to be a part of this site. It seems to be a very good site compared to others. I have hunt Co. a few times with a bow and never had much luck. I am going to a different unit this year, just not sure where. I have narrowed it down to 71 or 62. Does anyone have any info on these units or any other suggestions for places to hunt. Not interested in anyones secrets, just general info. Thanks.