I've tried the DB, and granted I don't do displays- so that may be why I don't understand the rimless or black silicone hubbub, or "beautiful" tanks, but I've found cheap tenners work best for my purposes.
Playing with different selections, they are small, but still large enough for ~stable params, cheap enough to be bought readily, and self contained in case any unknown break out occurs (hyda, bacterial, etc.) so I won't have problems with huge tank infections (at least not yet. I may change my mind in the future.)