I wish I could help you. I was in the same boat as your a month ago. I went back and fourth between atlas, ME, and Spartan. I settled on a BT69. Everyone told me to go with the tall one if used for hunting and I liked the CAL tightening system better than the PSR. Reviews I read said the PSR is hard to tighten when fingers are cold.
I have not received it yet so i cant give you real world experience.