You need to be more specific when describing what you want. Without knowing what you play and what kind of sound you want to end up with, it's effectively impossible to make relevant recommendations. "Punch and tonal variety" can mean one thing to a jazz player, something different to a classic rock player, something different again to a classic metal player, extreme metal, country, pop, surf... you get the idea.
It helps too if we know what the rest of your rig is: amp, speakers, pedals, anything, and how you set them.
All that said, as a general rule active humbuckers already reproduce a wider frequency range than any passive pickup can—that was the original point of their invention—so when it comes to 'tonal variety' you can't really beat the wide-and-even frequency response of common active humbuckers. The 85, in particular, is good for nearly any genre (okay, maybe not surf or country) and what tones you get out of it mostly depends on what you're plugging it into. It'll do classic rock with a plexi and death metal with a 6505. I'll once again use my stand-by example of Prince at the Montreux Jazz Festival, using a HS Floyd Strat with an 85 and SA, to illustrate the range you can get out of the standard 85; the words "Prince" and "Jazz Festival" should clue you in to the 85's versatility.
So on that basis, without yet knowing what the rest of your rig is and what you play or are trying to achieve exactly, I'll second Despair's suggestion of simply swapping the current pickups around. You'll find the 85 more balanced and flexible in the bridge than the 81 is, while the brighter tone of the 81 is really more suitable for the neck in the first place, as long as you back the pickups away from the strings. That's a good thing to do with any active pickups, really; lower them further from the strings than they were when you got the guitar, since ESP typically install pickups as high to the strings as possible for maximum output, which significantly reduces the flexibility of the instrument. Since active pickups have quite weak magnet fields their tone is affected more drastically by lowering or raising them than passive pickups usually are, so you can change the tone significantly (usually for the better) just by lowering the pickups a little. An 85 far from the strings is pretty much the most versatile, general-purpose bridge humbucker you can get. (Arguably only beaten by the 89, which is a similar tone but adds a single coil split option.)
So do try just swapping the pickups over first, and lowering them. Without knowing the rest of your rig, that's as good a place as any to start, and it won't cost you a penny.
Staying active, if the 85/81 doesn't do what you want, the next thing to try would be two 89Xs (or an 89X/89RX) since those add single coil options and the X preamp opens up the output range of the pickups, making the guitar's volume less compressed/limited. If having single coil modes doesn't interest you then I'd suggest the Jeff Loomis Blackouts, which are a very balanced bridge pickup (kind of halfway between an 85X and an 81X) and a very clear neck (halfway between a humbucker and a single coil). If neither of those pairings appeals then I'd suggest the EMG Hot 70 set which is as close to passive pickups as actives get, though for my money that does rather defeat the point of staying active.
Other than that, for a Floyd MH that wants some versatility, the passive selection that springs to mind first is a Custom bridge and Jazz neck. The Custom is as do-anything as a passive humbucker can get and the Jazz is always a solid neck humbucker no matter what bridge pickup you have it paired with. Again, we really need to know what the rest of your rig is and what you're playing, but without that information, a Custom and Jazz is the general-purpose passive combo I'd suggest you look into. Do bear in mind if you go passive you'll need to run a bridge ground wire; this is very easy, but it is critical and something a lot of people forget to do, then wonder why they have so much noise.
