Sorry for the late reply but I've been busy trying to get her through the control technique (MOT).
I fitted Eibach and Bilstein B6 sports together. I've got 16" wheels and 205 tyres of the correct thickness to keep the overall size the same as standard.
I actually found that I've got a better ride quality than standard as long as I don't hit really big holes. My Mrs has back problems and even she was pleased with the results!
Cornering, braking and acceleration all improved. In fact I haven't got ABS and pushing the brake as hard as I can at 30mph doesn't induce a skid now. I imagine that's down to better weight transfer (the car does actually stop quite well it's not that I've broken the brakes
)
Obviously I can't adjust the ride height, but to e honest I don't feel I want to.
I can't really compare this to a Koni set-up as I've never driven one, all I can say is tat I'm happy with what I've got!
Thanks to Doc's guide, I also found doing the job yourself is quite easy, as long as you can get the bolts out!!!! Just make sure you've got spring clamps, otherwise you should kiss your loved ones good bye before you start