This is going to depend a lot on how you intend on using either sub. If it is for pure SPL, you dont want full cooling and all the options on the BTL. Scott has recommended that for pure burps you want the 2mag version with p-chamfer and the SPL option for a tighter gap. The BTL and the MT are very closely related. I do think with all the options available, for a daily setup the BTL would be a overall better choice. The subs are so closely related and there are to many variables to pick which one would be louder. It would be nice if someone has both and could do a direct drop in test just for the hell of it. IMO The BTL is a better overall woofer because they can be custom designed for any use.