I don't have any knowledge on the units off of I-70. The limited unit I apply for isn't a high country unit. I drew a few years ago and had good luck. I got a Tom the first morning there. Not sure if it was just luck or if it's always that good? I hunt the OTC units close to home every year and the hunting is pretty bad. I'm sure there are some decent OTC units in CO but not sure where. I hunted at least a couple days every week of the season last year and heard 3 or 4 different birds gobble the whole season! I did have one decent opportunity, but it didn't pan out. I'll be tromping around again this year hoping to find the needle in the haystack... Good luck this year!