I like my Rebel Yell bridge with Abraxas/Crawler neck - the output levels are a good match and I get a nice contrast between the punchy, edgy RY and the sweet, singing Abraxas. Middle position sounds good too, though I always tend to use individual pickups more.
Having said that, I've never tried the RY neck or the Abraxas bridge, so I can't say if the calibrated sets would sound "better".
On a 2-humbucker guitar (which a lot of mine are), I like quite a big difference in tone between the pickups - bright, snarly bridge but warm, fluffy neck. A lot of neck pickups sound a bit too bright and defined for me. The combination of an AV bridge and AIV neck seems to work really well.