I've had both the JP signature bridge pups, and to be honest I think any BKP will have a better lead tone. No anti DiMarzio bias, the CL just doesn't do it for me (I loved my Evo 2). My Ceramic "Brutal Bass/Low-Mid Heavy Metal-Rhythm Pickup" Warpig does a better job than the CL or D-Sonic IMHO.
Based on what you're saying (alnico, tight, rhythm/lead), sounds like the obvious choice is a Rebel Yell, but wait for the Holydiver users to drop in. I seem to remember a lot of conversation about the HD in darker guitars a while back. Also, although you said you don't like ceramic mags, I can recommend the Aftermath for a mahogany guitar. It's very thick and tight, a lot different than the Painkiller. Out of curiosity, what experience do you base your dislike for ceramic on?