i have the slotted ones from aztec also got the kevlar pads as they were free at the time had them on for one run and changed them out, very good for every day and a wee blast but not a good run,
i changed them to mintex with good results also i changed to DOT 5.1 fluid when changing discs, if you are changing your fluid use 5.1 as DOT5 dosnt mix with DOT3 or 4 as its synthetic, spenno it would have been 5.1 in yours
this is the discs i have from them, had them on about 2 years and not had any probs at all (apart from a sticking piston)
i painted the centres black