People sometimes worry more than is warranted about condensation in coated tents.

It's not generally a problem at all, and only noticable in very cool and humid weather, when probably any tent will have condensation. Floorless designs permit drainage of condensed moisture, (and god forbid, leaks and spills and melting snowballs) rather than build-up and puddling on coated floors.

The issue is mitigated by using bivvy cover, as many do with tarp tents. The bivvy cover also addresses concern about possible drainage of rain water into tent, although this is best addressed through site selection.

The Black Diamond Mega and Beta Mid and various similar tents made by GoLite MSR and many others are fine for Cascades weather and are used there very frequently in all seasons.

If you like free-standing tents then by all means get one, but they aren't necessarily more stable or better in any way than non-free-standing tents.