I started out using Viva tanks and clearos but recently bought a custom blown glass carto tank...and I LOVE it! With the regular tanks I am constantly making sure to stand them upright when I set them down, and when taking them out in my purse, making sure they stay upright in order to keep the juice from leaking out or flooding, is really a pain in the neck. I have noticed with my glass carto tank that I can lay it down anywhere, without keeping it upright, and I get no leaking or flooding. It is SO MUCH MORE CONVENIENT! Is this the norm for a carto tank system? If so, I am switching away from the wicking systems. Recs on carto tanks systems appreciated!