What''s the best Head (toilet).....

[TrueBlue]

I also agree that Blake Lavacs are perhaps the best made, and trouble-free, heads in the world. We have two on our current boat and compared to previous heads we've owned, they get the job done in the simplest & most effective manner. Ours have Mark V Henderson diaphragm pumps, a remarkably simple but durable design, which unlike most head pumps, require minimal, if no routine service.

However, be prepared for some serious sticker-shock - they are pricey. Our aft cabin head bowl cover developed a slight crack, compromising the vacuum seal, important to the Lavac flushing principle. This was caused by our first holding tank pump-out. Unbeknownst to us, the Lavac head cover must be open before pumping out. Was I surprised to find Defender's "best" price at $140.00 . . . for a round piece of plastic.

[Sasha_V]

Is and airhead where you mount a toilet seat at the end of the boom and climb on out?

[sailandoar]

Lavac.

Simple, reliable and with the addition of y-valves the lavac's diaphram pump can be an extra/emergency bilge pump located where you can comfortably/securly sit and pump in an emergency.

[AlainPOIRAUD]

1°) A "LAVAC" too - I've had one in use for 13 years..
2°) A chemical one : Porti-potta