As for shows, I like to have a good representation of used kit, parts, oddments, and junk boxes; I rarely buy new.
For me the Kempton Park one has been pretty much spot-on; between that and the SE Bass bash I have a couple of things I look forward to.
(@TheGreek I sure hope the costs are more than covered and the effort is worth it for the SE Bass Bash, which I know you go to 'cos we've met there!).