I bought a set of BC Racing coilovers second hand off here, while there aren't any for sale just now they can be had new for around £570 delivered. I'm happy with mine and would recommend them.
what sort of things are you looking for from your next set, adj damping, adj top mounts how much drop etc??
i ran daiyamas on my mb6 vtis adj damping and could drop the height quite alot got them for 440 delivered new from MYgarage