Upload & Sell: On
You might want to have a look at some of the Acratech heads.
I had (and just sold today) an RRS BH-40, which is a terrific head overall. I didn't care for the flap-paddle design of the tension knob, but that seems to be pretty much just me.
I now use a Sunwayfoto XB-44, which has been terrific. It is also an elliptical ball, but is a really low-profile design. They have a really cool panning clamp they've been bundling with it. Their quality is impressive. No, they aren't made in America, but they have a very interesting design, excellent quality and decent pricing (the XB-44 is a premium-priced product).
My write-up of the XB-44: