Sorry I can't answer your question directly, I have not shot either of the two (but have heard mostly good things). It seems that folks either really love the Atlas, or, well you know...
It may be best to find someone to let you try one of theirs first.
I do have one of these, and I really like it. I only put it up as it seems to often get overlooked - not trying to question your field of two.
AR15 Heavy Quick Detach Duty Bipod for M1A, HS Precision, McMillan, Sage, & Socom