>Unfortunately it seems that most folks don't have much success with Tarptents in my climate (BC Canada) due to a) condensation and b) ultralight silnylon's inability to totally withstand torrential downpours (misting).
>AFAIK the Nemo Nano *is* free-standing.
The optional nylon inner of the Double Rainbow fixes the condensation problem in that you don't have to have direct contact with the wet surface. I would not count on the alledged 'breathability' of the Nemo to prevent condensation, especially in cold and wet conditions. I saw this first hand just before Xmas when I crawled around inside a cyclist's single skin Nemo tent (the two person airbeam model) after just one night of cool, heavy rain. The inside walls of the tent were totally saturated...not sure if it was condensation or leakage, but it was pretty bad.
I have heard about misting, but yet to experience it in either the DR or Cloudburst (both silnylon), though others have observed water coming from somewhere. In any event, again the optional liner of the DR would help if you found you were in these conditions. It makes the tent like having a double skin over the top of the tent so any water coming off the inner walls (from condensation or misting) will just roll off to the mesh edges. But yes, you would need to either stake the tent corners (so four more stakes minumum than the Evolution 2P), or carry extra poles to make use of the 'free-standing' feature. FYI, in any moderate or stronger winds, all of the mentioned tents will need extra pegs and guylines to stabilise them, so again, I wouldn't get too fixed on the concept of 'free-standing' when it comes to your options. If you can get away from the marketing hype of free-standing, you could also maybe pick up a second-hand Stephenson's Warmlite 2RS. You will definitely have condensation, but no misting and pretty good wind stability (unprotected vestibule entry is no fun in heavy rain though!). or maybe really luck out and get a second-hand Nallo 2. It's a bit heavier, but meets all your criteria for no condensation and no misting.