Been using floorless shelters since 2000. Kifaru -- 8-man, supertarp and sawtooth. Spent many nights in all three from -30F to near triple digits and I have never once wished I was in a different type of shelter. Been in every climatic condition possible and have yet to be disappointed.
P.S. I won't 'put-down' other shelter options since I have limited experience in those other options available.
