Fantastic, but they're costly. They are top of the line. Other great products are Eclipse, Adire Audio, Boston Acoustics, Image Dynamics, Focal, Infinity, Resonant Engineering, Elemental Designs, etc. If you want to compare.
i have 4 w3v2 12s duel voice coils of 2 ohm i love em but if you go this big try to get 4 or even 6 ohm subs for amp reason alone and the wiring of the system i have a 500/1 and im gettin the 1000/1 tomorrow (amps) im a freakin jl freak love it to death the 500/1 or the 1000/1 amps are the best made i love the fact that they produce the same power at different volts