Yea, it is a great little tank, i'm very happy with the picotope although SOMETIMES the curved glass on the corners can give you a weird distortion on the viewing angle.
I've debated changing to a 5g rimless (i.e. glass cages), but the seams on the glasscages tanks seem to have huge seams and sloppy silicone from the two tanks I've seen in person... maybe it should be a DIY project!
I don't know how much I'd like it if I hadn't done the auto top off, for the 3 weeks where i manually added 1/4 cup morning and night it felt like I was tied to the tank, couldn't go away for the wknd, etc, and every reefer needs to spend some time at the beach!