If you have approximately $2K to spend, the British "Baby Blake" is the way to go. For about half that much, there's the Groco Model K--the last of the American bronze "thrones" built to last 100 years. But when it comes to AFFORDABLE manual toilets made to last 10-20 years, the jury seems to be equally divided when it comes to which is best--the Lavac (made by the aforementioned Blake, btw) or the Raritan PH II (also available in a compact version-- the PHC--which uses the PH II pump but on a compact base and with a shorter handle). Both are available as "conversions" (everything but the bowl, seat and lid) Everything else made today is "disposable"--designed and mfr'd to last only a couple of years.

Raritan PH II http://www.raritaneng.com/product/phii-and-pheii/ http://www.raritaneng.com/product/phc/

Lavac: http://www.lavac.com/

Nice to know I haven't been forgotten...yet.