Rear Brake Discs

Hi,
 
When I went for my MOT test the mechanics informed me that my rear brake discs were getting corroded and would need to be replaced soon.
 
Does anyone please have any recommendations for rear brake discs?
 
I am thinking of getting the EBC Turbo Groove Brake Disc or EBC Ultimax Sport Slotted Brake Disc, does anyone have any experience of whether these are worth it?
 
Thanks

well if it passed the MOT whats the problem?
 
I am thinking of getting the EBC Turbo Groove Brake Disc or EBC Ultimax Sport Slotted Brake Disc, does anyone have any experience of whether these are worth it?

they do the job and look nice

Cheers - they def look nice - I just hope the performance matches!
 
no problem at the moment - but the corrosion is quite bad, and I reckon i'll need to change it within next two months - or I will run out of disc!