Hi Andy,
I had them warp, so had them skimmed with an on-car lathe, then within a few months they warped again. I bedded them in as per instructions so was just annoyed. I also had a bad experience with EBC pads on my old Ibiza, so I've come to the conclusion that EBC and me don't get on so I won't buy any EBC products again in a hurry. I know that other people run them and have had no issues - so it's either me and the way I brake, or I just got unlucky.
The Godspeed stuff was recommended to me by a friend on SeatCupra.net who runs a set on his throttle bodied 220bhp 16v Ibiza. They were fitted back in early March and thus far are behaving as expected. Oh, and I'm running Ferodo DS2500 pads with both sets of discs.