I've never used them for a homebrew event, but use them all the time for work. They are either flimsy in the wind or ridiculously heavy. My office has taken to purchase them from Dick's when they are on sale with their warranty (Two replacements for free). We lend them out to local non-profits as well so the warranty get used heavily. The quality of most of them almost makes them disposable.
As far as logos, I would put the money into a banner or tablecloth that can be used with or without the tent. Honestly, either will likely outlive the tents.