I am shortly going to build myself a new Sub. Right now i have the Dayton 10" tiny mighty II. It is great for what it is but i need more bass. My listening area is 16x12x8 with openings to dining room and hallways. I have narrowed it down to three choices, and want some opinions. 1) dayton 15" titanic MKIII $198.66 US 2) dayton 15" DVC $189.88 US List was $599.00 US 3) Adire Tempest $150.00US. Here's the thing, I am leaning toward the tempest because i live 5 minutes away from Creative sound solutions here in Canada. So no shipping or border fees. Also, box size is not a factor. I can build one as big as i need to get the best bass possible. I have heard great things about these subs from various forums/people, but have not had an chance to hear them for myself. All i can assume is that built properly they would give me a vast improvement in the Bass department.... Thanks for any opinions/suggestions.