What double b pedal should I get?

Ive have iron cobra jr's and they are just not fast enough anymore. I want pedals that I know that with practice i can know doubt keep up with nile/necrophagist/burning the mes/ born of osirs kind of fast rolls. I just bought DW 9000 accelerator drive pedals but I'm worried there more of a thick heavy pedals im not going to get deffinent speed from. help me please if you have experience. if not i probably wont listen to you.