i think you should just do more research yourself. there are so many options. and the enclosure you put it in will affect it alot.
jbl gti mk2 (uses DDD tech)
the new mag will have xbl2?(not out yet)
CSS has their new sd12 with xbl2 said to be great
IDmax is always a good choice
they are have their fans and i am baised too tho . i would go with the jbl i liked it over any setup ive had or heard.