Basically, i drive a mitsubishi 99 eclipse hatchback. I have 2 pioneer 12's running with a pos amp rated at 400 watts. When i turn it up the bass is unbelievable, but thats not what i want. Im sick of like all this bass and rattling i just want something that has great sq. I deffinetly want something smaller, what would be best '1 eight' '2 eights' '1 10' 2'10's' and if so what sub and what kind of bax (bandpass, sealed, ported). I heard that the infinity kappa pefrects have great SQ and as for Jl's ive gotten mized reviews. Please help out someone here i got about a 350-400 dollar budget for the whole thing- subs, box and amp. Also will it still rattle bc it does now at like medium volume and if so will a dynamat trunk kit help a hatchback? Thanks