Diamond Audio D9 subwoofer?

I am trying to find out if anyone has any experinece with the Diamond D9 subs.  I am looking to run a D9 10" dual 2 ohm sub in my system.  I have a new JL audio 10W6 Dual 4 ohm, and I am contemplating as to which sub to use.  The Jl would be getting 300W at 2 or 8 ohm if used and the diamond would be getting 600w at 4ohm?.  What sub would sound better under these conditons? 

if you are talking about sq then the jl would win that battle. And you need to tell what car you have, and the box you are useing sealed, ported. always give more info then is needed. Want to know some good equipment- JL,Adire Audio,Mcintosh,Brax,Helix,Eclipse,JBL,RE,Dimoand Audio,Zapco, pritty much anything DYhon,Forbidden recommend

On the12volt you give some info and you get in

The sub will be in a sealed box in a 350Z, it will run off of a diamond audio D1752 amp.  rated at 150x2 @ 4ohm, 300x2 @ 2ohm, or 600x1 at 4 ohm.