Hmmm, the last few years the number of attending aircraft has dwindled a bit, last year IMHO was very disappointing and even though I'm local I probably won't bother again unless there is a major attraction (Vulcan etc). They really, REALLY spun it out this year and you were waiting maybe an hour or more between flights which considering the weather wasn't much fun, static displays were few and far between and the range of stands / stalls was pretty poor as well. I'd hang on and wait for a bit more info on who's flying before committing to travel any kind of distance.
Carl