Granby guy... which part of the unit have you hunted? Did you spend any time in the wilderness area? I'm not as familiar with other parts of the unit. I know the far eastern edge the most. I might draw a mule deer tag there this year. Looking at a 3rd or 4th season tag in either 501, 51 or 511. Need to check which unit I stand the greatest % chance of drawing with 1 point.
It's probably more me than IGWT not giving 501 enough credit. Living close to the unit I would think I'd hear more about it if it was any good. Maybe your right and it's a sleeper. The low amount of tags undoubtedly has something to do with the lack of popularity too I assume.
I have hunted the wilderness for elk as well as the burn. I don't see how you could go wrong with a 4th season deer tag. Sorry IGWT. I put the wrong name with the wrong post. Pm me and I would be happy to share what I know