I think they are ok. Kinda no mans land, not low nor high range. Have you thought about K-Tec coils?
if you stretch a bit more for the konigsports you get adjustable damping and height so they are much better suited if you want to use your car on track as well as road. Its all down to what the car will be used for. just looking at your avatar it looks like you have done track before.
For £300 V-Maxx are worth a pop IMO.
Yes they are cheap but all of us who have had them have been impressed.
where can you get them for 300 quid mate?