Just got my car back after having some Eibach 30mm springs fitted, decided to get PSI in stoke to do it as i couldn't be arsed to do it myself.
PSI guys did a great job, no problems with their service or work.
Ride wise it is sooooooooo much better than the standard S-Line Springs, the suspension now soaks up ruts and rough surfaces, whereas the standard set up would make a meal of it and let it crash through the cabin.
I would well reccommend these springs for people who find the ride too harsh with the S-Line springs.
Drop wise there is no visable difference right now as they need a few hundred miles to get them properly bedded in, i measured the gap between the centre of the wheel to the arch and there is 5mm difference so hopefully in a few weeks the drop will be better than it is now. I'll post some pics when they have settled down.
Loving the ride comfort now - must be getting old!