around here they charge about the same for either sub...mtx is prolly a little moreMTX will take more power...and has A LOT more excursion than the L7..and its just a better built sub. BUT..i believe for the price of a 9515, you could get a SoloX...if your buying through retail store.
15 solo x here is over $1k I think. L7 is about 450 and 9500 is 600 iirc. However the folks selling the mtx here can get talked down, the kicker dealers...won't budge.wow...I think a 15" L7 is like 400-450 here...9500..i dont know any stores that have them in stock...but they go for about 700 for the 15"