Gaz, Avo, and Leda all have plenty of complaints about them and all are too much money to take a chance on.
Too much adjustment means too much messing around and unless you really know what your doing and how to drive could be a complete waste of time and effort. I know I'll spend all day adjusting things and still not be able to work out what is best.
Also looked at BC and D2 coilovers, D"s get bad write ups and BC weren't inspiring enough when telling me about their products. It also looks like quite a few of these coilovers are all made in the same factory but spec'd slightly differantly.
Going to put some poly top mounts on first and see if that improves things, Ive found a bit of play in one side.
Definately leaning towards the Bilsteins but its a shed load of money. Need to decide whether to spend the money or buy an M3.
Paul