Deep Blue Professional makes fairly inexpensive decent quality traditional standard sized rimless tanks. I ordered the non reef ready 57 Edge (36x18x20) for $320 from my LFS. It has a low iron glass front viewing panel and is built with 1/2” thick glass and black silicone. I chose the non reef ready version so I could drill it for a low profile Modular Marine ghost overflow that I will set it up with a Beananimal style drain. With the ghost overflow installed, I think it looks a lot cleaner than the tanks with the bulky internal center overflows that are limited to only Herbie set ups.
http://www.deepblueprofessional.com/edge.html