EMGs, cheapest places I'm aware of are (if you want fromt he UK anayway) or in Germany, where I got mine from.

Thormann are quite often cheaper than anywhere in the UK (for anything, not just pickups), but not always. GAK always try to be cheaper than anyone in the world but never actually have anything in stock, and leave you waiting for months while the shipping date gets pushed further and further back. I've not actually ever bought anythign from GAK for this reason (not for the want of trying...). Thormann are good though.

I wana slap some invaders on my ibanez RG, its still got the shitty pick ups it came with but in the next few months Im going to get some put on. EMG's I really never got into but in all fairness I would have to compare them with other pickups. As long as it sounds chunky and i can hold/trem pinches for england im cool with that

Yar Seymour Duncan Invader's are my other pickups of choice. Got one in me Warlock and it made it a thrash monster.

I just really dig high output.

I have duncan invaders in a jackson, and theyre pretty good. Although i've never played them myself, all the reviews i have read for BARE KNUCKLE PICKUPS have been great, and the cover options they do kick ass.
Check out the bare knuckle warpig here - http://www.bareknucklepickups.co.uk/ZH-warpig.html
Or the nailbomb here - http://www.bareknucklepickups.co.uk/ZH-nailbomb.html
Theyre both pretty high output, I've been intending to get a set to go in a B.C.rich bich I have.