XTant and Kove subs

Wonderin if any of you have heard of these speakers/have them??

I'd like to get the 12 inch XTant subwoofer with dual 4 ohm voice coils.

The Kove 18 inch one isn't sumthin I'll get, just thought it was awesome because it is 2000 watts RMS.

sites:

www.xtant.com

www.koveaudio.com

Ive heard the Xtant 12' 4vc on a bass test vs the Eclipse 12' Titanuim series, Xtant won, it sounded good and when over powered didnt blow

Kove audio used to be a big name in the SPL world.

So could you say that it is a better sub than like Audiobahn's 12 inch? Do you know any people that I could ask that use them to as how they sound and if they last?? This summer while I get a job full time I'll prob go and buy two dual voice coil of the 12 inch ones and get XTant's amp most likely too, there is a dealer located about 60 or so mile north of me.

Btw, thanks for all the help guys.