While also a major proponent of the Evo, the Vapolution 3.0 has a hydro option as well, and is actually even more truly "all glass" than the Evo since it doesn't use screen.
The Vap3 comes with a piece that is a 14mm male, the Evo top is an 18mm male. They can work with whatever glass you want, but the hydratubes each company makes is generally the "easiest" since they are custom built for them.
Ah the "all glass" Vapolution. I don't know why I forgot there was a Vap 3.0
How come it doesn't seem to have the attention that I thought it would have? The Vapolution 3.0 thread doesn't seem to be that lively when compared to the EVO one.
So the Vap3 already comes with a piece that is 14mm male. My glass is 14mm.