It looks like you already received a few good pointers. I think you'll find that there are a lot of great units and hunts, but it really comes down to personal preferences (hunting style, access, proximity, quality/quantity, etc). Something to consider (if you haven't already)- the Colorado Parks and Wildlife publishes hunt statistics every year. Since CO is a preference point state for deer and elk, there will be a minimum amount of points required to draw, and anything less has a 0% chance. You can find all of the stats from here:
http://cpw.state.co.us/thingstodo/Pages/Statistics-Deer.aspx . Click on the "Draw Recap Reports" for last year (or any year prior) for the species of interest and you will find a wealth of info.
Ill use unit 44 as an example. For DM04404R (Deer, male, unit 44, 4th season, rifle) you see that the tags were "Drawn out at" 15 preference points meaning that any amount of points under that will definitely not draw a tag. However, if you go over to DM04402R (2nd season), there was an 89% chance of drawing it with only 3 preference points, or for DM04401M (1st season muzzleloader) there was an 89% chance of drawing with only 1 point! And of course these tags draw out at the first choice, so you are wasting your time listing a hunt as 2nd choice if it requires any preference points. Sooo, once you hone in on a unit, you can put the odds in your favor of drawing a tag. Also, if you have no idea where to start, you can look at preference point minimums and get a good idea of which hunts are highly prized and produce high quality deer. Hope this info helps!