hmm i somehow think that you'd like the pickup to do 2 different things.. sometimes chunk does not go in hand with super fast surgery clarity..anyway, i have never heard black/death bands who'd have meaty/chunky sounds, usually it's uppermidrange.. and if one is referring to audio samples, it's usually the bass combined with this midrange character that creates a fuller sound..
I've had a painkiller, hoydiver, nailbomb and now I've got an emerald in my 7string.. I am completely satisfied with cleans, crunches and rhytm sounds, it's got (almost) the tightness of a painkiller with less piercing trebles/scratchy sounds and to me is really a huge surprise.. The funny thing is that people do not recommend it for bright guitars.. mine is bright but it just works great.. therefore it's really only about trying and trying and listening to what your ear tells you is ok.
however - you have not mentioned the instrument and amp you've got.. maybe it's the character of the amp that just does not suit you