+1 for the Benro carbon fibre, light as a feather, Mine is Model MC68, twist lock legs.
When I need it, I use my standard ball head but usually I manage without it..
I've read one report that said the twist lock can slip, but I've never experienced that, the current models on the Benro site all have flip lock now.
Not sure if my model is still current but one HK eBay dealer has them at $99 free shipping.
http://www.ebay.com/itm/Benro-MC68-M...item2eb8a456f8