I've always liked the Iron Cobras, perhaps because they were the most common decent pedal I've encountered, I just sort of took to 'em.

I never found them difficult, and I'm not a particularly hard hitter. I also play heel-down, if it's anything. A friend of mine had the Axis longboards for quite some time and they were definitely a different feel; I wasn't used to them and found them a bit difficult to control, honestly- very light. I'm also not a very good drummer, though, so that's worth considering.

That being said, if I spent more time with them, I would probably have an easier time Playing Metal Badly. Mostly, I just Play Jazz Badly behind a drum kit.