Beautiful axes, mate.
I tried the combos you said (except for the ragnarok which I'm very curious about) and I prefer the warpig, though it is very dark and I don't know if that would be overkill in your limba guitar. It could work if you have a very trebble oriented amp like mine (5153) but I dunno. Juggernauts work perfect for me, I also love brutality to death, but I favor versatility as well.
Maybe the safest bet for you, apart from the Rags, are the Painkillers