It depends on how much you wanna spend. I bought a 11.4 gallon Mr. Aqua for $45.00 with free shipping, and I am happy with its quality.
Glass clarity isn't bad in my opinion, but of course, it won't be closed to ADA tank. If money isn't an issue, then the decision is real easy to make.
I also like its foot print as 18.9 x 11.8 x 11.8