The Pagid / DBA group buy is still live
- When it finally closes, you're unlikely ever to see prices that low again.
just for the record, I reckon at least 75%-80% of braking performance is down to the pads, 15%-20% due to discs and the rest due to fluid (assumes the caliper is in perfect order)
However, if you also consider brake component life, then you also need good discs.
As an illustration, I normally get about 10,000 - 12,000 out of a disc / pad setup. I once tried Pagid Yellows on bog-standard pattern discs - wore the discs out in less than 5,000 miles
conversely, expensive discs and cheap pads are pointless - you need the best friction material you can afford, otherwise the brakes will last ages, but they won't perform well.
approximate order of brake setups, based on a combination of performance / price / longevity
standard discs with Mintex 1144 pads - Fine for everyday use, won't cope with any track work or repeated fast road abuse.
standard discs with Pagid Blues - OK for light track work, likely to warp the discs with any real heat.
3G discs with Pagid Blues - OK for light track work - discs may last more than one track day, pads will last for several.
DBA grooved discs with Pagid Blues - will stand for fairly serious abuse, will handle multiple trackdays and thousands of miles of spirited road use.
DBA grooved discs with Pagid Yellows - best cost / life balance - superb performance from the discs and great life from the pads
DBA 4000 discs with Pagid Yellows - probably the best life / performance combination money can buy.
DBA 4000 discs with Pagid Greys - probably the best performance you can buy, but will wear out faster than Yellows.