Would be interesting to see what the shop says - and if they can help out with the solution. Chances are they were following the previous owners requests rather than their own recommendations. CT/Ultimate - I think you'd be able to work out by the amount of brake dust on your wheels - ultimates are pretty dusty. Either should be better than OEM's. Stock rotors would still be fine - probably get 100k out of them. If it is warped rotors that's the problem then it's the rotors themselves, not that they're worn. They got hot and got bent - reports of it happening all too often struck RDA's off my list - I think they have good rotors and one's not so good (something about manufacturing moving from Oz to Malaysia?? for their lower tier discs?) Machine them and it'll fix it short term - they'll warp again. If, as you say, you like your brakes then call it in another 10k before they need machining. Less K's each time before you need to do it. Pads, fluid and braided lines will make more of a difference than whichever rotors (without going bigger) you go with to brake feel and stopping power - up to the point of fade. If you were counting coins before an upgrade I'd go for T2's and braided lines rather than T3's or better rotors for street duties. (am looking at the Shockworks brakes at the moment - 4 pot, floating discs $2k (fronts) - as my upgrade path from the T2's) Will be interesting what the shop says - am tipping it'll be something along the lines of "we put on what we were told to"