i'm a huge fan of the Suhr Aldrich pickup. i have one in a mahogany hamer chap. as a reference, i have 3 rg 520s., which are mahogany, but no maple caps, 2 have sapele. i have emg 89s, dimarzio paf prol, distortion, evo and tone zone in them. maybe its something special with the hamer, but the Aldrich blows em all away imho.
+1 on this. I have a 3120 with an Aldrich in the bridge, and from the sound of it, our tastes are probably similar. I also have Aldriches in my RGA321, and one of my RG520QS. In terms of widely available pickups, the Aldrich is far and away my favorite for Mahogany/Maple combo.
That being said, I've just purchased several sets of p'ups from a local luthier here, who aside from making AMAZING guitars, also has his own line of pickups, specifically targeted at folks that like their gain, and like their clarity as well, but that Don't
like the sterility of EMGs. His prices aren't outlandish - in fact they're very reasonable (ESP since you're getting a handmade, hand wound pup), and they sound phenomenal.
His name is Brett Smith, and his website is http://www.guitar-logistics.com/
I own both the Diablo and The Destroyer pickups (both in Mahogany guitars), and love them both. For a bit more versatility, go with the Diablo, for full on devastation, go with the destroyer. I'd seriously encourage you to consider them in your tone quest.
Take a look at his gorgeous instruments while you're there. All you Ibaheads should check out his Destroyer/Iceman hybrid. Tis a thing of beauty.