I took my time deciding this expensive mat was what I needed, reading reviewers' reservations or encountered problems. After airing the new mat for a few days (no wiping) I used it for my most challenging yoga class - one hour power yoga with these results:
a)It stayed firmly in place on the polished solid wood floor;
b) My palms, fingers, soles and toes engaged the mat surface from start to finish with no noticeable slippage;
c) The new-product smell was noticeable but not disturbing;
d) There is firm cushioning, which reduced physical stress; and
e) At last being 74 inches tall didn't mean I have to constantly spill over onto the floor.
I think I made the right choice.