Drilling and slotting are overrated. I've tried both, I race my car, I daily drive my car, I always brake hard. I'm back to solid (but vented) rotors. drilled & slotted make no measurable difference. They LOOK nice. Deffinately more of a bling item than performance.
I'd suggest brembo rotors, but sure, you could use any brand as long as they're made to fit your car.
I had brembo drilled and slotted in the front and rear with yellow stuff pads, it helped a little. Then I swithced the fronts to the solid vented TT225 rotors and Mintex pads and it mad a BIG difference.
Yeah, I noticed when I went to the ECS Tuning stock sized Slotted / crossdrilled rotors for my front brakes, it takes a while for them to heat up, and at first they didn't stop as well. I'm using the Mintex Red box pads I got from ECS as well. I think I paid about 50% less than what VW wanted (Around $360) for all 4 wheels, Slotted / Crossdrilled rotors for the front, slotted for rears, + pads. I'm thinking once I go past the resurfacing tolerance of the rotors, gonna go either slotted, or vented solid rotors again.