I have one, I got it from a friend after the side cracked on it. I put a piece of plexiglass in to cover the crack and used it for 2 years. JBJ sent my friend a new one where the glass had been reconfigured so they didn't crack as easy. My friend has had his JBJ Nano up and running with corals for 2 years now. I kept upside-down jellyfish in my Nano.
nanos, red seas, and biocubes are well worth you money! im getting a 29g biocube for about 300. with 3 light fixtures god enought for any coral, besides hard