It was just this past Feb that PS ran their electric
toilets review...they rated the Raritan
SeaEra "best budget
buy" and the Raritan
Elegance "best in show."
You can save quite a bit if you order the SeaEra "conversion" (everything but the bowl available for both sea water
and pressurized fresh water
versions) and recycle your existing bowl, seat and lid. Any bowl that mounts using a 4-bolt pattern--which includes 99% of bowls--will fit.
And, there's a way to upgrade to the larger household bowl for free. Ask your local yard to let you know when they're replacing a manual toilet or a basic macerating electric that has the larger bowl...'cuz yards just toss the toilets they remove. Years ago, when I still owned my company, I'd pick up a couple of both sizes each fall to have on hand in the spring for the inevitable calls from customers looking for a cheap
replacement for a bowl that their inability to learn how to winterize correctly had resulted in a cracked bowl. If you have qualms about recycling a used bowl, sanitize it by pressure washing
it with plenty of detergent and bleach.