Sorry to dig up this old subject again, but it is one of the most useful topics in a way as a very good filemanager can make so many other tools redundant. Are there any new developments in the field that would make it worth retaking the poll?
Anyway, regarding Opera and .mht files, I had Opera portable installed a while ago and moved it to another folder and had problems. I'm pretty happy with the installed Opera (except for webmail problems) and it saves .mht files as default. Strangely it also saves some webpages with associated folders (eg. xyz.mht with xyz_files folder) although it seems to have stopped that now. I thought the .mht file made these folders redundant? Any thoughts please?