Thought I’d ask here as seems may help OP and others.
@George@RTR_Parts what your thoughts on plain vs grooved discs? Only worried about 100% track / race cars
No worries, all the different disc types have their pros and cons. The grooved type discs can help with keeping the pad surface "clean" , but will wear the pads quicker.
As I mentioned above, a quality blank disc (like the Brembo HC or the revised Renault OE discs with the extra holes that I supply aswel) , paired with suitable pads and fluid, with some decent brake cooling from the front fogs is the best "bang for buck" brake set up and run by many track dayers and racers
If a budget in mind, it's always better to spend the extra money on the pad compound, and run the cheaper plain faced discs
It's horses for courses though, some people like the look of the Brembo Max or Brembo Xtra drilled, and run them on for the road for OE pads
Need any info send me a message with brief car spec/use/budget and I can get some suitable options across
I spoke to George and ordered from him in the end. He was excellent with his advice. Basically have me a few options, but in relation to your question, we went for plain discs with ds1.11 pads and it's awesome.
No problem at all happy to help, and glad you're happy with your brakes, cheers!
Buy Road Track & Race Parts - Brake Specialists for RenaultSport and all Sports and Performance cars Road Track Race Parts