I chose other, as its not a function of volume for me. I've resealed everything from 10-150gal tanks myself with great success.
I now have a 150gal tank that was a freebie, and has started leaking. I'm not going to bother repairing it as the tank edges have numerous chips, the glass is all scratched and the frames are in pretty poor shape. When I got the tank I knew it was only a matter of time before it broke down, so I'm not going to bother putting in the work to save it.