Best Source for Brake Parts

[mike_one2many]

Folks,

Could you kindly recommend a good source (and brand) for brake parts for a 2003 V40 with 120K miles? Also, I would be interested to hear everyone's learned opinion on the pros and cons of performance brakes (slotted or cross-drilled rotors).

Thanks so much in advance!

P.S. A bit of of background:
* I do not race the car and do a lot of highway driving.
* I replaced front OEM rotors with slotted ones at 50K - at next brake service, will need new rotors.
* Rear rotors are original and very thin, hence I'd to replace those, as well.