Glad you're enjoyingh them, they really are great pickups. Overall, I probably prefer the Emerald in the neck but I like the fact that the Holydiver neck gives me something a bit different.
As for the Crawler question earlier, I agree with Kiichi that adjusting the pole pieces helps a lot. I have the treble side set to about 2mm from the string and the pole pieces are in their normal position. I then lowered the bass side of the pickup quite a bit but raised the pole pieces back up to 2mm. The result is that it's not quite as dark sounding anymore and has a bit more bite and articulation. I really thought that the Crawler wouldn't see as much service as my beloved Holydiver but I find I'm using it all the time. The Holydiver is certainly much better at Metal but for anything up to 80's Metal, the Crawler is absolutely superb.