Its good to go to one outside your own area, they do seem to change in content, I like going to the ones on the coast when we go on holiday, things get real interesting at them.
in my local area I have a small on on a saturday that although it can be quite rubbish with only a few sellers I have found some of my most interestibg stuff there and its only 5 mins from my house.
on a sunday there is a massive 7am start one, mixed dealers as well as real booters, this can be quite traumatic to be a seller, people looking in the back of the car before you can get setup and what I call 'walkers' from the local suburbs with their cases on wheels.
From there I go to another for 9/10am, much the same but closer to the coast and not close enough to any town for the 'walkers', then a 12/1pm ish one to finish the afternoon, I like the late one its very different and far less manic, they also alow sellers to set up before letting ghe buyers in, if im goibg to sell its there.
I do love a booty.
