Rear brake discs

Anyone know if these are any good?

http://www.gsfcarparts.com/603re0170

Part No. 603RE0170 if the link does not work. They're listed at £69.60 each but the discount code 'offer10' knocks 10% off so it works out at £125.28 with next day delivery.

If they're suitable then it's a good price!
 
My experience with aftermarket rear disks hasn't been too good, rubbish bearing and materials used. Caused me some headahces on the 182, I'll only use OEM now.

But thats just me haha