I have both a Holydiver and an RY... I concur that the RY is def. the brighter pickup...
I have it In a thru neck ibanez and it's very versatile. Can be aggressive and modern when full on tone/volume but any extra edge it has can be tamed with the tone. In a band context I like the extra top end it has to cut through. Better to have it spare than not at all! I remember being completely knocked out by the vintage scattewound airiness it has on the first play. It does nail the vintage/modern thing.
With light overdrive and out of phase switching the RY can do some great vintage, Peter Green sounds too which was really suprising and welcome. So overall my keeper set.
The HD seems thicker and slightly more compressed to me, but not in any bad way. Nice for sweet, legato lead, quite similar to a 20yr old SD JB I have in another set neck.
With a good amp - I use boogie combos and cabs, they both are really great.
I'd personally be looking at the amps at this point too as the nuanced differences of HD, RY, A-bomb are probably outweighed by the tone shaping, sustain enhancing power and compression of a high quality, cranked amp.