Oems are plenty enough but not cheap. Sbs again are more than enough for road riding and a lot cheaper. Would stay away from carbon sintered if road riding. Just my 2pence worth
on my road bike i just stick to oe as they work very well for fast road. i do find it funny when people start talking about cheaper pads on there 10k+ bikes.
I use brembo SC compound pads. No issue with them for spirited road riding and a few trackdays. Excellent initial bite even from cold. Don't really use them in the wet but not had any issues when I have. Not for commuting type use as they don't last forever, but a step on from the oe pads.
Carpimoto is where I buy them as they seem cheaper for brembo than anywhere else.