i did with my btl for 2 years.... abusing the **** out of it daily. granted it was probably closer to 3-3.5kw on music, but still plenty of power with lots of torture. I was impressed with how long that lasted.
i miiight be getting my hands on a pair of eclipse ti pro 4hp 15's //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif. in which case i'd sell one here and keep the other. that's one option, the other is a local night shade for 300.
as far as reconing the btl. If i were to recone it then i'd be spending about 150. if i sell the btl motor for 150 then i can kick in that other 150 and get something new on a 300 dollar budget, which i'm okay with.