Originally Posted by
TheRulesLawyer
They are the same speed wise. Some additional ergo options with it though. (BTW, the RS doesn't come with all the ergo parts in the box. The S does)
The M12s is faster response than the MT44,the RS comes with the most widely used options of the M12s and is the same response. If you want the best then the M17 on SXR mode is the absolute fastest response and connectivity