The boat we sail on in the Caribbean uses the two burner.. seems fine. I think this is the way to go if you want an alcohol stove, or if you're simply dead set against propane.
Alcohol is slower, but who's in a rush?
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)