dc lvl 3

ok hopefully this is going to be one of my last "which is better" posts. 2 12" dc lvl 3's ~~~ or ~~~ 2 13" jl w3v3 im really looking for SPL but i would also like some SQ. plz dont recommend any other subs, i really hate it when ppl do that. if you want to recommend something, you can...

im looking at 2 12" dc lvl 3's but i wanna know like the percentage of sq to spl in a ported box. like 60% SPL and 40% SQ or whatever. also what amp would you recommend to power 2 of them thats not over like 500 but clean/powerful?