I've had the Hellabucker and BG Bucker Dark. Both are great pickups, different though. The EQ for each is not so scooped that you have to adjust for it. The main difference is the Hellabucker is hot enough that it compresses a bit quicker, and doesn't clean up as well. I'd go for the Bucker Dark first, it has more clarity and is still plenty hot.
I haven't played a Lizard but it gets raves from everyone who has. Killer cleans and smooth gain leads.