currently I am strongly considering the axiom m22ti (bookshelf) or the axiom m60ti (tower) and will pair them up with a jbl pb12. When using the sub together with my main speakers for 2 channel music, will there be any advantages by going with the m60ti over the m22ti? My guess is that both combos will sound identical from 80hz and up and 40hz and below. The difference will be in the 40hz to 80hz range and I am concerned that the m22 combo will lack some mid-bass slam, which is a very important criteria for me. Another question I have is if the bass extension and output of the m60ti is strong enough for the pb12 to be redundant?