Excellent. It is the perfect size for me, and exceeds all expectations I had.
I'm used to bongs that are twice as tall as this, but I was tired of having to use so much lung power. This hits great, I just have to remember to clear it slowly to avoid any splash back.
Works great with ash catcher. Very smooth!
The ice catcher and percolators make this powerhouse bong easy on the lungs. Not the biggest piece ever but I've had some amazing rips off of it.