As with most shows its ok for a look and feel of some stuff, and generally gives a better chance to compare than at your local RFD.
All the salesman from all the companies tell you they have exactly what you want of course, keep an open mind! If you have an idea what you are after already they can be useful for feeling out deals, but be careful of one off show deals, you can often do better else ware (but not always, some are ok).
Usual traffic grief, queues and daft expensive food/drink.
Worth a look if you've not done a show for a year or two!