I try to use MSV as much as possible especially over focused events you'll find with MSV (That's Motorsports Vision Jonathan Palmer's company owns Brands Hatch Snetterton etc same people that Superbike organise trackdays with. http://www.motorsportvision.co.uk/) that the sessions turnaround quicker and there tend to be more spaces whereas Focused are more concerned with your money IMO and the track can be quite crowded with turnaround too slow for me I also find the attitude of some of the staff stinks.