Have you considered fermenting in a keg? A 5-gal commercial keg with a
Brewer's Hardware sanke conversion kit would work. I do 10-gallon batches in a 15.5 gallon keg, and the kit allows me to transfer under CO2 pressure through the racking cane, so I never have to move the fermenter once the beer is in it. While it's not as convenient as a conical (where you can dump the trub), I get pretty clean transfers as I can adjust the height of the racking cane to avoid picking up trub.
Alternatively, a 5 gallon corny keg would be easy to come by. If you wanted to go smaller, they do make the 3 gallon corny kegs as well.