Zowie mice where good when they released. They have great shapes, but shit side buttons, feet, cable, heavy and expensive, also the sensor is nothing special anymore.
There is no reason to go for zowie atm unless u only want the shape (and there are clones).
Pros used them because they didnt need software.
Vaxee is just a slighty updated zowie mouse, little lighter, cable a little less stiff and with better pricing, they are decent mice, but nothing to be hyped about.
There are lighter options with better cables for the same price, there are better options for different grip style other than palm, there are clones.
I am just not a fan of a 80gram non wireless mouse, when other mice offer the same features..