1993 Camry 4 Cyl...

I got the warped rotors problem...
I see alot of different rotors available online- standard style, vented, slotted.

any recommendations for a good aftermarket rotor?

 

Brembo makes good rotors at reasonable prices.

Suggest you stick with a standard style. The rotors should already be "vented" by design having an air gap between the disk surfaces.

Drilled rotors can crack at the holes, slotted rotors can chew up the pads. Neither is required for street driving.

Suggest Toyota brand pads as less tendency to make noise. Reuse any shims that are installed between the pad and caliper, use a little brake grease on pad/caliper contact area minimize risk of noise (squeal).