I wonder if Peggie Hall ever got over her prejudice against 'composting' heads? I read her book cover to cover, and was about to pull the trigger on a fancy (heavy, expensive, complicated) Pura-San system, then realized no-discharge means NO discharge, even treated discharge, at least around here, and in pristine waters we hoped to visit. Ended up learning a lot more about composting heads, then learned even more from experience, and at least the objections she had in her earlier edition, turned out to be non-issues for us. No, the fiber mix (cypress sawdust in our case, free, and pleasant) for drying solid waste didn't bring insect problems, no, the fiber didn't require huge storage space, (a shoebox holds many months' worth of compressed coir) no, the toilet itself wasn't an unwieldy space-hog, (ours is no bigger than a small home loo.) No, ours requires no fan, no ridiculously limiting and expensive heat, no special carpentry. Complete installation from unpacking the box to ready-for-use took less than 45 minutes, solo. No, we haven't had problems with disposal of used fiber, with difficulty in using the thing properly, or with keeping it clean and inoffensive. We found no difficulty swapping one gallon jug for an empty (free) one every night. Simplicity, for us, has turned out to be a very good, economical, and completely odor-free thing. And NO HOLDING TANK!! Turns out, all the dire warnings, and involved solutions in search of a problem, may have been based on opinions from those who sell complicated marine sewage treatment systems for a living. I know it's tacky to bite the Raritan hand that feeds one, but it would be interesting to see if Peggie ever updated that whole chapter of, as it turned out, incorrect information. She has a loyal following that believe every pearl of wisdom from her lips. Most of it is, no doubt, true, at least of the traditional flush-marine toilets, stink-saturated hoses, trouble-prone valves, and foul holding tanks, but once we gave C-Head a chance some years ago, we realized there's too much repeating of old-wives tales, and not enough first-hand and factual experience, at least in this case.