In my opinion the Palmer experiences are a cut above the rest.
I have just found my schedule from my day there in 2005. It included
Nissan Pathfinder on a 4x4 course
Mitsubishi Evo drifting
Nissan 350z (I won the time trial, one of the reasons I always wanted to own one !)
Karts
Caterham 7
Renault Clio Cup
Palmer Jaguar
Formula Audi single seater
They get you to really push the cars, no holding back, I span the Formula Audi at least once
They even gave you a read out of your lap performance in the Formula Audi...mph, rpm, throttle, gears, etc