In the course of booking my track day at Oulton Park in September, I spotted that they're also doing an Aprilia Track day on 13-August for 159, where;
"In addition to the trackday with your own bike, Aprilia are bringing along a selection of their 2008 bikes for you to try on the track including:
RSV 1000 R Factory, RSV 1000 R standard, Tuono 1000 Factory, Tuono 1000, Shiver 750, and Dorsoduro 750. All at no extra charge! These will be available on a first come fist served basis and at the discretion of our instructors."
How good does that sound? I would have gone for this one myself, but I'll be away sunning myself at the time. It'll be p*ssing down in September I expect (uinlike now of course, when the weathers perfect...)

Before you ask, no I don't work for Motor Sport Vision or Oulton Park.