The Eco picos on marinedepot.com are nice... Definitely aesthetically pleasing.
If you want to put your own rimless tank together, you can go with a Mr. Aqua tank. ADA and Do!Aqua's. I think GLA too.
Fluval Edge tanks are pretty nice and not a bad price nowadays. Got mine for <100 bucks. Although the 12 gallon Fluval Edge 2 should be coming out soon. The Fluval Ebi is designed for shrimp but got mediocre to bad reviews.
I just mentioned the designer aesthetically pleasing tanks. Of course you can go much cheaper by by buying real basic stuff and putting it together yourself. Just depends on your interest and budget restraints.
