would you consider two 12"s for $500? im not selling, i just think it might be better to spend more to get one good pair rather than 4 cheapies.
if you would like to look at options for a pair ill suggest FI Q, DC level 3, audioque, RE SX. double check the prices of them, maybe you could get a model 1 step higher on some of them.
sorry i stopped looking at budget subs a while ago and forget what there is. ive heard the EFX sounds good for cheap. i think thats what its called lol.