I've got some K-Tec coilover's on mine and can't fault them tbh.
They're pretty comfy, a lot more comfy than i expected them to be. It still handle's really well too. The front's will go silly low but the back's not so much. Mine are wound all the way down on the back and it isn't what you'd class as decked.
For the money, i think they're awesome tbh. Don't forget though you will need the camber, toe and alignment setting up. Which is roughly an extra 100 quid. So with any coilover's you need to add that onto the price.
Jonesy i think people generally tend to rate Gaz for track and the like's. Although someone will be along soon to tell you properly
You'll also find people have so many mixed view's on coilover's you won't know wtf to buy!! I just decided to go for the K-Tec's and pray. Paid off though.