When it comes to toyotas I tend to shy away from OEM brake components, some people will probably disagree though. As far as what i've used aftermarket, I, like a lot of people, used brembo rotors. I first put them on my 3rd gen but those warped pretty fast, another set warped after I put some on my moms Land Cruiser and she by no means is an aggressive driver. Considering how expensive they are I have not gone that route again. I started putting napa ultra premium rotors on some cars I have worked on and so far they have been working great and I used them on the rears of my '03 too with great results. Come spring I will be putting napas on all four corners of my '05.
Just my .02