Here's something that I will be pursuing after doing plenty of research, pricing of "name" brands, and watching performances at a Morgan Park Raceway (Warwick Qld) meeting.
TRW produce pads branded as Lucas, primarily in the Euro market so I'm told. Pricewise they are very sharp, and the pad materials are disc friendly (read fairly soft and dust heavy) but extremely heat resistant if bedded properly. To be fair they're probably not directly comparable with some of the high $$$ pads that some guys and girls go for (EBC, Pagid), but the overall value for occasional track use means you could buy and consume a few sets before spending the same.
Seeing the results at the race meeting, a couple of guys running Lucas pads finished their sessions with smoke wafting from the brake assembly but reports of consistent, strong retardation. Evidently they ran better with a couple of sessions behind them.
I'd like to hear of any experiences with this brand, but plan on sourcing a set for my s.1 R33