Drilled rotors on Ebay are generally cheap rotors someone has drilled some holes into. They chew up brake pads, and weaken the rotor. Slotted rotors, if you buy good ones, have better stopping power but chew up your pads. If you are looking at drilled or slotted that are cheaper than plain rotors they are likely cheap rotors that someone has machined. I would stay away from them. It is okay to buy Ebay brake components, but stick to the name brands and stay away from the "too good to be true" deals.
I use plain rotors, but that is a personal preference. I will use Akebono ceramic pads and premium rotors (Bendix?) for my next brake job.
2001 Bonneville SSEi (retired at 365,000 Kms.)
2014 Jeep Grand Cherokee Overland (yes, I know its not a GM)