It's very hard to choose which one is the best buy between Dive Xtras Piranha 1 for $5,000 or the Bonex/SubGravity Ecos+ for $5100. Which do you think is better and why? FWIW I do mostly recreational cave diving in Fl several weeks per year, but also dive Atlantic wrecks and the Keys most years, as well as lakes and quarries at home. I just can't justify spending 30-40% more to get one of the top of the line scooters. I've only dove Mako's and their equivalents. I've enjoyed the research, but sooner or later I have to make a choice. Thanks in advance for your help.