Have you got your Holydiver installed yet? I'm really looking forward to hearing about how it compares to both the A-Pig and C-Pig. The A-Pig sounds like it has that smooth, fluid tone of the Holydiver while the C-Pig seems to have the more attractive EQ based on the website.
I take it you've not found that comparison with the JB Eric?
EDIT: I meant to say, last night one of the people I teach guitar to came along with a guitar that was loaded with a Seymour Duncan Invader and I had a go on it. My expectations weren't high given how unimpressed I was with the JB and Hotrails I had but it was a really nice pickup. It did everything I seem to be looking for in a new pickup for my Jackson. It was really 'big' sounding and gave that lovely thick tone that I want in the Jackson. It was also really powerful and I'd certainly describe it as a saturated tone that seemed surprisingly fluid. In the short try I had, it seemed reasonably articulate too but I imagine it would struggle to retain that articulation as the volume and gain rose. If I wasn't such a loyal BKP user I'd simply buy an Invader for the Jackson but I assume there is going to be a BKP version that is 'the same but better'. Actually, probably not quite the same as I'd still like it a little less harsh than the Invader and a bit more smooth. Anyway, I thought I'd mention it as so far it's the closest thing I've come across to what I'm after.