Pretty solid base. It’s heavy. The umbrella won’t fall over, and it’s not too large (or pointy like square stands, the circle base works well in its favor) so toes won’t be stubbed.  Matches the best choice umbrella well.  The only thing that i really dislike it that there is no opposite to the twist knob, so if it’s tightened against the umbrella pole it pushes the pole to the opposite side, so that it is no longer center, and the plastic disk pops upwards because it’s too weak to hold against the weight of the pole.  I tried putting some cardboard inside the base against the pole opposite to the knob and it helps some. Still, this would be an easy flaw to perfect in manufacturing, and to have opposing tighteners in the base would make it perfectly straight and sturdy.  Then I’d love it.