For my use, I'm looking at putting a max of around 30 lbs at 6' height, but the footprint is paramount. Yes, a tripod could be more stable, but the footprint is the concern here - think indoors corporate/black tie type stuff. They'll be attacked by the foo/decor folks anyway with heavy fabric, so I have no problem adding 50-75 lbs of sand bags on the base if necessary.
Justin, are you needing to add any sleeves/shims to the pipe to put a speaker on it, or is the 1" sched. 40 sufficient? I know OD should be in the neighborhood of 1.3" or so, which is why I ask.
Edit, since other folks replied before I finished typing mine: Yes, I could scoot the legs of a tripod in, but the profile does matter - i.e., being able to slide in under the side of a small hors d'oeuvres table, etc. I have had issues with tripods being too large in the past, which is why I was looking for a flat solution.
So far the Generico base looks like the best solution. In this case, flat is good.