I do quite like Marklin as well. They run well. 
I know the next time I’m in WI, I’ll get Everclear as per your advice. Right now I use the “green” stove fuel but they add 1% acetate (finger nail polish remover?) which makes it less ideal.
I’ve been using alcohol gel lately but today for some reason with the chilly rain, the BTUs was down even though on dry colder days, seems hotter...
I use grain alcohol myself.
I like Everclear and Graves. Both are 95% (190 proof) and they burn so clean. Won't stink up the house or sting your eyes.
In CT we buy it any any liquor store.
In Vermont, some some stores didn't carry it and those who did made us sign for it.
Gil