Depends on the makeup of the guitar, but the Nailbomb (with ceramic magnet), Painkiller, Aftermath, Cold Sweat, etc could all be good options. The Abraxas and Holydiver are wonderful pickups but not for an 8-string IMO. I would suggest the C-Warpigs or Holydiver for this guitar. Those play really well with bright guitars like this. Output can always be adjusted with pickup height. Also the Lundgren The One pickup is a great choice here. I would suggest the Rebel Yell or Emerald, both great choices here! I could not disagree with your friends enough. The C-Bomb is super tight and clear, if its sounding boomy to you the problem may be with the inherent tone of the guitar or the amp. I also don't really like 5153's so that could be part of the problem. It is bright though, yes. If you want something tight but not shrill, I would suggest looking into the Rebel Yell, Black Hawk, ceramic Warpig, or even some of the lower output models like the Mule and Black Dog. Also you may want to look into the Lundgren M6 (or M7 if youre talking about a 7-stringer). Tight as hell but thick. Agreed.