Biased... its A1 racing Club...
i designed the track so its an obvious vote! made of different age and pile Astro which makes you concentrate to get consistent laps and when a technical track is laid it is very rewarding... its still a new track so grip is getting better as sand is brought up and removed.
Unbiased... Broxtowe... its a fine almost carpet surface and gives very good grip levels, very high grip when damp to drying and easy on tyres