I put a BKP Holydiver in the bridge and a DiMarzio Virtual Vintage 54 Pro in the neck of mine. Sorry, the HB2 is already in a Japanese Dinky along with a PAF Pro in the neck
I've only owned the DA7 (and it's well known that 7 string DiMarzios never sound exactly like their 6 string counter parts) and my impression of it was very much like an EMG 81. It's got a pretty even frequency response, it responds really well to EQ, it's very dry sounding, there's monstrous amounts of pick attack on tap, and it loves to be in front of a dirty amp. However, I did find it to be pretty limited. I'm sure the DA can do more than metal, but I was never able to make it sound the way I wanted.
The HB2 (I've never actually owned a Mega Drive, but I remember reading that someone who had both said that the HB2 was a damn good copy) was actually much more versatile and had a killer lead tone (the DA sounded like ass for leads, imo). The HB2 also reminded me of the Nailbomb I have in another guitar, it had a similar snarl and just felt very good under the hand, especially when playing thrashy stuff.
The Holydiver is a whole different animal. It's easily the most versatile of the pickups we're talking about (also had a Tone Zone/HS-2 combo in my 565 when I bought it and I HATED the TZ). The Holydiver also has the perfect lead tone for me: smooth upper mids and a well defined pick attack with pinch harmonics jumping out at you (the HB2 was pretty similar on pinch harmonics). I use the VV 54 Pro mostly for cleans, although its also got a very warm fluid sound to it after the articulation of the note. Rolling the tone knob off under gain makes it sound very similar to an Air Norton S too, if that's more your lead style. That's the tone I tend to use on ballads and things like that where the aggressive, cutting nature of leads played on the bridge wouldn't make sense.
I did test clips with all the different pickups I tried in my 565 (TZ, HB2, HD, HS-2, VV54), its a blind clip though. If you're interested give it a listen and tell me which pickup set you like the most and I'll tell you which ones they are
These were done really quickly in my bedroom with my practice patches that were dialed in for my RG7421 with the Nailbomb/Cold Sweat set. There's nothing in post, everything is raw.
I can't post links yet, but I'll PM it to you