Warpigs are awesome especially if you are a tight player. My brother and I are really tight rhythm players and I think the Wirpig, which is slightly looser and darker than some of the other BKPs, is awesome. I think an aftermath would be too tight especially since we play through VHTs. The Warpig seems to work well with the supertight and somewhat dry VHT.
I have Painkillers in a Les Paul Custom and they are pretty aggressive and tight, I also have a nailbomb which I love. That pickup is a little less aggressive, more open, and more organic sounding. I like them all, but my SG that I just put the Warpig in is sounding really massive through the VHT CLX.