The people on here stating that drilled and slotted rotors are not good or not as good as regular rotors is just their opinion... My opinion of them having used them dozens of times and having noticed better braking on all of them is mine.
I have read positive and negative reviews on this and it is what I choose to use and will continue until I feel otherwise.
wrong, it is fact, and the reasons have been pointed out.
Reviews are what you make of them...example:
I had a customer who for years purchased the cheapest bottom of the barrel pads and rotors they could get their hands on, did their own slotting / drilling / zinc plating, then sold them as a top shelf premium product with a price close to or more than a dealer would get at retail. They marketed so well (or found enough stupid people) that they have folks pulling OEM (USA, Germany, Japan, etc...) manufactured rotors...which are as close to top shelf as it gets, off of their fairly new cars and installing bottom of the barrel chinese stuff because it was sold to them as an "upgrade". They sold parts to everyone. All the reviews were stellar.... "way better than my old brakes". Well, obviously...if your old brakes were good then you wouldn't have replaced them. They were worn out and in disrepair.
Regardless of what parts one chooses, issues like sticking pads, stuck slide pins, sticking pistons (temporarily) get solved by accident during the course of a brake job. Of course it will work better afterwards....even though the junk pads and rotors that were installed are nothing special at the lower end of the spectrum as far as operating characteristics, temp range, longevity, and overall quality.
If you put any real heat into your brakes, you'll have cracks running right through those drill holes....which you typicallty won't get until significantly more abuse on a plain or slotted rotor.