Last week I bought a small nice ballhead from FLM (
http://www.flm-gmbh.de/EN/products_photographie.html). Normally its used only as a leveling base, but for the Artec its a complete head with about 230grams only. (Price is less than 100€)
[attachment=21685:FLM2.jpg]
[attachment=21684:FLM1.jpg]
Michael