I did some research a while ago when I was changing pads and went with Textar epads high-ceramic content for lower dust. They feel like oem but any dust that comes off is light and not full of the burnt iron that sticks.
Textar are an OEM supplier for BMW (Textar are actually part of TMD who also make Pagid and Mintex)
Jurid are part of Bendix and make after-market OE Quality brakes. ATE (Part of Continental Tyres) again are after-market OE quality.
Euro regulations prevent any pad sold for road use performing by + or - 15% differently to the original specification. So as long as it's a genuine Euro-stamped make there is little chance that you will actually detect a difference in performance between different road spec pads, and any improvement in one area of performance usually requires a compromise in another e.g. fade Vs initial/cold bite. So in slightly simplistic terms, gaining an improvement in fade probably means sacrificing some cold bite (choose running out of brakes on a hill Vs in to the back of your neighbour at the first junction

)
But durability isn't the same as performance and some aftermarket brands have reports of squealing, pad material breaking-up or coming unglued so it's worth doing a search before spending on supposedly 'up-rated' pads. But you can't go wrong with any of the big names and despite everybody swearing X is better than Y I doubt an average road user can tell any difference between them in a blind test and the rest is placebo (including my epads

).
All pads and discs sold in the UK/Europe for ROAD USE must meet ECE R90 regulations, up-rated race or performance pads without R90 approval are not legal. They may be ideal for track use but not legal or advised for the road mainly because they need to be super-hot to work.
Euro ECE R90 aftermarket brake specification regs http://www.unece.org/fileadmin/DAM/tran ... r3e_01.pdf