I am starting to collect parts for my subwoofer, I have to do this slowly so the wife does not notice.... I was going to pick up the amp first since I realy do not need most of my decisions made for this purchase (ie. sealed, ported, pr, shiva, titanic, dvc, sae1204 ect ect.) So, is there any diffence between the two? The pe is $130ish (maybe get it off ebay for about 110 or wait for a sale) and the MCM is $89. I know most people use PE, is it better or just better known? thanks for any input.