Freestanding is not all that - you need to stake tents down regardless. "Freestanding" is another word for "box kite."

And moisture (assuming you mean condensation) is often completely unavoidable - it depends on a number of factors from site selection to weather, to how you pitch the tent - if you don't use all the stake out points (I've seen about a zillion poorly pitched tents with the fly collapsed against the netting) and you pitch over grass, and it's humid (raining or just rained, or soon to rain) you won't avoid it. I've seen it happen to an open tarp pitched six feet off the ground.

For a lightweight palace, you can't beat a 3 person MSR Carbon Reflex. Most 2 person tents are perhaps 1.5 person tents at best.