I own the mad scientist 3.0, its bigger than the 2.0 with thicker glass. There are some flaws, the percolator holes are too small. It gets clogged up after smoking like one or two bowls. I ended up having to take the percolator out after every bowl, and it eventually broke by pulling it out through the hook. Be careful with the percolator- I ended up super gluing it back together, but there was a peice of glass missing around one of the wholes. This actually ended up making it more effective because the little holes didn't get clogged up.

It is also really annoying to clean, but overall its a great bong.

And yea don't put boiling water in the top chamber.. warm water is fine. Put cold water in the bottom and warm water in the top with ice.