Another vote for Planet Aquarius. I bought a custom 60x30x18 rimless from them last year. Quality is excellent, price was better than the top shelf makers, and I can't imagine that I'm loosing anything by not paying that premium.
Downside: they don't sell to the public. You've got to deal with a local fish store.
Downside: they don't sell to the public. You've got to deal with a local fish store.