I would go with the one you like. Take into consideration height and width. Height for corals and lighting and width for more bottom room. I like the empty one for its design and rounded corners. Nice clam on the bottom of that tank oh yeah fish bump!!!
Also I have never seen a tank like this before snyone know who makes them
I see bow fronts at Petsmart all the time but I've never stopped to see if they're acrylic or not. Try doing a search of acrylic bow front aquariums and see what turns up. Also, check out glasscages.com. They'll build you anything you want, but in all actuality they've already got it. Nice to have options eh?
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I don't always build a reef, but when I do I take my time. Stay patient my friends.
Building a reef is like going back in time and being 5 years old at Christmas!