I personally think there a waste of money. Chessington does not get the queues that Thorpe Park gets and many of it's ride are empty for several hours at the beginning and the end of the day. For instance you could easily ride Safari Skyway, Rattlesnake, Billys Whizzer, Runaway Train, Tomb Blaster and Dragon Falls in the first hour with no queueing troubles. Fury's queue always dies down to around 20 minutes at mid-day so you could get on that then and Vampire with three trains at the moment has a faster moving queue then usual (queues recently have been around 20 minutes).Fastrack, as I have said before is for people that don't bother to plan their days properly as especially at Chessington you can easily get around the rides and save 7 pounds.As for ultimate.. well it depends if you have money to burn really. I think it is rather hit and miss to be honest as Ricky and Steve saw the other day, the queue for Fury was non-existent at 1pm and so anyone with Express passes really had wasted their money.