I have been for the past 4 years and it is a tremendous show to go to. I already have a ticket for 2009. Where else would you find 30/40 thousand+ like minded people all in one place over the exhibition period. What I like about it is not only being able to have a hands on, but being able to talk to the manufactures representatives and not some shop assistant who doesn't have a clue.
Mention anything to do with photography and you will find it here, from aerial photography to studio work, desktop printers to huge professional ones. Digital editing workshops to wedding photo albums. You name it and its there, if there is one drawback by midday its so crowded it is a job to get near some of the more popular stands.
Even talking to visitors can be informative, there is a usually someone who already has the piece of kit your interested in and can give you first hand experience of it.
I would highly recommend a visit if only once even if to look at some of the hugely expensive cameras or wacky gimmicks .
Realspeed