MAN, some things need to be left for PM's ... I don't even live in Colorado and posting exact directions really bothers me, yes it's public land for all to use, but really, keep it to a PM if at all... That being said OP do all the online research you can, nothing will compare to boots on the ground and its by far so much more rewarding researching/scouting, getting into elk, and giving them a dirt nap all on your own. Just get a tag and get out there regardless of where you end up. Its a constant learning experience, this year I ate my $650 tag soup, happily - why? because I learned a lot and realized my mistakes that I have to work on. Also I now realize what everyone was telling me " the elk are where they are". I put many miles on thinking " wow look at this basin there has got to be herds of elk living here... didn't see one, when i did find them...They were all within a mile from the highway! All I could do was laugh. With all that being said, don't get overly hung up in which "unit" and where to "go". There is elk in every unit. My best advice to picking a unit is to be 100% realistic with yourself and start researching on a topo map that you are physically in shape to be able to handle the units terrain, sometimes topo just doesn't do them mountains justice! Pick a unit, go hunt, have a good time - make memories and most importantly have fun!