RE "X" subs or Powerbass "M" or "S" subs anyone have experience with these???

Hey I am trying to look out side the usual Bestbuy chain store subs. And was wondering if anyone has tryed either the Powerbass M or S series subs or the RE x subs? Are these just cheep subs or not overpriced commen name brand subs. I know there are higher end subs in these brands but not that are shallow enough to fit in my double cab. I am considering a single ported 12 or dual 10's in a ported box powered by a 600 watt @ 2 ohms mono amp.
Thanks for your input!!!

 

the best thing to do is contact Mr. Marv he is here at TW he can build any box to match many different subs he has done a lot of work for people here at TW

 

I am wondering more about those speakers then the box.
Anyone use those speakers??? Likes..... dislikes...... anything???