What Active Sub?

[Ashlol]

Right, I'm looking into getting an Active sub, as it is the best option for my budget.
I read in a thread here somewhere that a Vibe SQ12 sounds really really good, but unfortunately I can't really stretch my budget to this (£235 on Car Audio Direct).
I was wondering if the Vibe CBR 12 Active sounds as good as the Fusion Encounter Dual Active, as my mate had the Fusion subs in his Sax and they sounded mint. The reason i'm asking is because I don't really want to fill my boot with bass, I need room to put 1 seat down for my bike .

I guess I could save a bit more for the SQ12 if it is worth it, it's just I NEED bass so bad lol.

What are your opinions?

Thanks for any help