Need recommendations on rear brake rotor replacement
 

I need to replace the rear brake rotors on my wife's 1999 9-5 SE 4 cyl. and I'm hoping to get recommendations on the brand, or at least the type of rotor I should buy. We're looking for a reasonably priced value.

The car is not driven hard. My wife does mostly (90%) urban type driving.. short distances and under 50 mph/80 kmph. She wants something comparable to OEM but hopefully a little cheaper.

Any suggestions would be helpful. Thanks in advance!