Some people will say the Confuser was no help and others will say they didn't even bother with it.
I found it to be invaluable (regardless of the mistakes) as the CAA have a nasty sense of humour when it comes to the format of questions and trying to catch you out.
An older version will still be good practice and at least give you the gist of what to expect.
They have been hard to come by, but do pop up on Ebay occasionally. I've even seen a PDF version kicking about!
@TractorBoy - Airlaw is a mandatory requirement for solo.