Replacement rotors on '12

[Meehow]

My car is a 2012, I'm at 45k miles and need to replace my rotors. I was looking into going with ESC Geomet slotted rotors, but after extensive research blanks seem to be the best option. (cracking/noise/longevity)

I came upon two part numbers for stock rotors that apply to my car;

AUDI OEM 4G0615301 for $250.00 / rotor
AUDI 8K0615301M GENUINE OEM at $112 / rotor

I cannot find a difference between the two, wondering if anyone is a parts expert and could shed some light on this?
I know there was a TSB which addressed the brake squeak and increased rotor width by 1mm, but I don't think that would warrant the price difference.

[Bomiz]

Ask Eurocode? They sold me my replacements for a nice price.

[Mops@Nemesis]

I would look into Stoptech slotted. Very nice, and can be had for around $150-$200 per axle.

[Meehow]

I haven't read one thing that clearly illustrated the benefit of slotting. In fact most people who track their cars, prefer blanks. I considered ECS 2 piece rotor, but I might get a new S6 next year, so going stock for now.

I would look into Stoptech slotted. Very nice, and can be had for around $150-$200 per axle.

[Mops@Nemesis]

I haven't read one thing that clearly illustrated the benefit of slotting. In fact most people who track their cars, prefer blanks. I considered ECS 2 piece rotor, but I might get a new S6 next year, so going stock for now.

Cracking is drilled. Slotted will give a better bite (at least initially), better cooling and they do look better. They do eat at pads a bit more and will be a bit more noisy. Was only trying to save you some money and get a better rotor. Stoptech also offers blanks.

[Spartan300]

I would also recommend slotted rotors or at least get some with the hub either coated or black to avoid the ugly rusted hubs in the long run.

http://farm4.staticflickr.com/3820/9477984966_9e62ee5181_b.jpg

http://farm8.staticflickr.com/7409/9704423097_451c077ea5_b.jpg

[Meehow]

Not sure what you're reading but "slotting" a rotor is not better. If that were the case most race cars ALSM, F1, Indy would be running them. I appreciate your input.
Cracking is drilled. Slotted will give a better bite (at least initially), better cooling and they do look better. They do eat at pads a bit more and will be a bit more noisy. Was only trying to save you some money and get a better rotor. Stoptech also offers blanks.

[Mops@Nemesis]

Not reading anything. I did my rotor due diligence many years ago. Welcome.