I've been looking at Facebook Marketplace (even though I despise FB), and Craig's List. There are some decent tanks, and a lot of overpriced junk. I think I'm probably going to end up just living with it and checking it constantly. Since it's above the water line and an acrylic tank, it may never actually let go. I will probably talk to Titan though next time we have a club meeting there about the cost to build me a new tank but external overflow instead of AIO because most acrylic manufacturers don't want any part of building a coast-to-coast AIO.
My tank is 48" x 30" x 16" although if I did it again I'd prefer 48" x 30" x 20". The 16" height does somewhat restrict equipment choices and I'm sure the fish would appreciate another 25 gallons. That size is ideal for the spot in the foyer that it currently occupies and is a manageable size for me. I really like the AIO as it keeps getting down to floor level to a minimum and it is easy enough to work on that my wife doesn't feel intimidated doing filter changes or even cleaning the skimmer cup. I'm not so sure that would be the case with a sump, plus I like the open T-slot frame look and with a sump I would need to refit the stand skins.