I have one.

dislikes: not even close to the flow of a tunze stream, I have an early one that isnt wireless I hear it is expensive to upgrade.It has a speed controller but you cant bounce it from hi to low like a tunze. I hear the wet side wears out parts often but mine has never acted up , I purchased it when they first became available, so its been in use awhile, it was noisy at 1st

likes: It does move quite a bit of water. It just does it in a wider stream which doesnt feel as powerful as a tunze. It does seem to fluff the water better close to the wall it is mounted to. Dead spot directly beneath the pump much less w vortec. It takes up way less space inside tank, but you will have a unsightly motor mounted outside the tank. I also like the battery backup . lifesaver in a power failure

hope that helps