I recently got a pair of 10 gal longs, 24"x12"x8.5 with beveled top edges, little silicone, curved bent front edges, 39$ each.
They look at good as the Amano tanks if not better, and something like those little one piece cubes.
You can make or have your own tanks made instead of waiting and compaining, or paying lots for the ADA stuff.
I get beveled glass, typically 1/8" or 1/4" thicker dependeing on the longest dimersion, then silicone the glass together, use clamps, painter's tape etc.
If you do not possess skills, have the glass comany glue it for you and tell them what you want.
I made a 75 into a nice Eurpoean style tank.
10 gals(standard) have too thin of glass IMO to do this, 20's are fine, I have a nice one.
I use a Razon blade(clean!) to remove any left over silicone.
Works fine.
Regards,
Tom Barr