Waterbox does financing. They have been popular lately.
RedSea had some issues with stands and that scares me personally. However, they did address it and helped their customers which was the right thing to do. I do love Red Sea products.
Most of those tanks have metric plumbing that isn’t all that great. BRS sells metric conversion adapters though so you can plumb it with US pipe and fittings.
In Texas, Planet Aquariums is the best custom tank IMO both for price and build quality.
Online you can’t beat SC Aquariums deals.