I bought a Higgins hub at an auction for 50 cents once. Including the bike it was attached to.
It's a Sturmey clone, but I don't think it's quite as well put together as a SA. The cog won't interchange for one, and on this particular Higgins the sun gear was completely gone and there's enough slop in the planetary gears that even when you just hold the planet cage in your hand it sometimes binds and won't rotate (which is what I think did in the sun gear rather than vice versa). I did get the fun of pulling it apart (my first hub-cracking), and the oiler lid threaded right on to the AG I bought a while ago, so don't feel too bad for me :-)

I'd go with the SA, all other things being equal.