I've now done things both ways, since a few months ago I used my bottling bucket for a primary.......but even though I've never had any spigot problems (other than figuring out how to take the red rotating part out to clean it), I'd have to come down on the side of the KISS contingent here. The Fermtech autosiphon for me, and for the foreseeable future.
“Malt does more than Milton can / To justify God’s ways to man”
-A. E. Housman (1859–1936). A Shropshire Lad , 1896.