I've got the AN / TZ set (true velvet single in HSH configuration) in an Ibanez RG655. For those not aware, it's a basswood bodied RG (the pointy horned super strat shape), maple super wizard bolt on neck, rosewood board, with an edge tremolo. This is the only guitar I have a lot of experience with them in, so I cannot really comment about how it would be in mahogany. First off, what folks say about them being dark is at least true of the tone zone. It's dark - that said, I have found that with most amps you can just adjust the EQ to get it less dark to great effect, and the overall darkness does have the benefit of leads sounding good on this pickup all the way up the neck. If you really gravitate towards very bright pickups, this probably is not the best choice for you, but if you ever find your bright pickups to sound kind of harsh, then this will likely fix it. Regarding the Air Norton, it's not that dark to my ears. A Gibson 490R - that's dark. The Air Norton seems to have a fair amount more high end compared to that. It is not nearly as bright compared to a Jazz, but it has a lot more body to it, and seems to sustain better. A Seymour Duncan Jazz has the edge clean and is super clear, it just can sound plinky sometimes. The Air Norton can get a lot more fluid. I would say it's bright enough, especially with some gain where I feel it outperforms the Jazz.
Back to the tone zone, I did a little comparison yesterday. I ran both the Tone Zone in my RG655 and the SD Custom 5 in my ESP Horizon 3 (maple neck through, alder wings, carved maple top, ebony board). The custom 5 is a very tight pickup. It's a bit scooped with a PAF-ish kind of EQ profile. It has a lot of highs, and a lot of attack. For a medium to high output pickup, it's very clear. I chose these two to A/B because they are both Alnico 5 medium-high output pickups, but with a *very* different EQ profile. The Tone Zone is described as having a 8.5 bass / 8.5 mids / 5 treble EQ curve, whereas the Custom 5 is more like a 6 bass / 3 mids / 8 treble pickup. Back to back, the Custom 5 is definitely clearer on chugging rhythms. The Tone Zone definitely sounds huge in comparison. The chugs are less defined, but they have more of a gut punch than the scalpel of the custom 5. When it comes to lead work, they both sound great to my ears, albeit very different - the tone zone being thick with an "awww" sound to it, and the custom 5 being more focused with a nice singing quality. What really surprised me, and part of the reason I am writing this is when it came to more complex chords. The custom 5 has a clearer attack, but the Tone Zone actually has way more note separation than the custom 5 when playing beyond two note power chords. This is why I disagree with some assessments of the Tone Zone as being muddy. It's actually the opposite when set up at the right height. The custom 5 is a very clear pickup (for a passive). The tone zone is clearer than that under high gain (I was using a 5153 on blue channel). I heard all the notes on the tone zone whereas it actually started to get a little bit muddy on the custom 5 (gain was pretty saturated). Props to Dimarzio for designing a passive pickup that can do this.
AN / TZ set is definitely not for everyone, and it's a little annoying how nearly every high end Ibanez has this set and only this set as an option, but if you don't mind some EQ changes on your amp, and don't gravitate towards the brightest of the bright tones, it can be a very nice set.