Fast is one thing.
Taste is another.
Anything that can be played fast and tasty, should also sound great at a slower tempo as well. Things played fast just for the sake of speed ("how many notes can I cram into this space?") bore me very quickly.

('Course, there are those here based on what I've read in past threads, who accuse those who can play fast and tasty as "show-offs". Envy is one of the 7 deadlies though, isn't it?)