I've only had a chance to use my hexamid about a dozen nights or so, but I find the condensation is far easier to manage, not that there is necessarily less of it.
When the silnylon would get wet it would hold onto the moisture, sag like crazy no matter how tight the pitch was the night before, and seem to just stay wet. The cuben does get wet, especially over my head (which happens to be where the dog sleeps too...so I blame him), but doesn't seem to drip, sag, or cause me difficulties in any way. It slides down the wall of the hex, runs into the netting on the floor, and voila...no worries. (As an aside, while initially quite skeptical of the net floor, I find it rather ingenious now)
This is why, sadly for my bank account, I don't think I would ever buy a silnylon shelter again.
I guess I just need to be careful about pulling it against a sharp edged piece of wood, as some previous folks have warned. Thanks for the heads up!!!