??should I??

I have a fully loaded FI BTL 18 and a hifonics bxi2608d amp and I have a guy trying to trade me two 15" 9515dd's and a xxx-6500d amp for it. would you guys do the trade or keep the FI? If I keep the FI then I will get another one and have two of them in my toyota and run oriond5000's to them. as far as the 9515's go then I would have to run three or four and I haven't found prices on them so I don't know what they run and if they can be reconed or not. do any of you guys have any experience with DD? I know they are good subs but I don't know if they are equivilant to FI.

damn, does anybody on here know what I am talking about? anybody care to share an opinion?

you got a full paragraph of what seems to be gibberish to me...  if you have specific questions like that i'd just call up your local stereo shop and run it by them.   

KEEP THE FI

eff that, dd's SLAMthe btl gets loud too, but wont put up the numbers the 2 15's will.i say do the trade, but inspect the equipment first. if that 6500 was running both subs, ask what impedence. if he ran them @ 1ohm there might be some damage.