DPReview.com has posted a review of 10 tripod ball heads designed for large, heavy camera and lens setups.
They gave the best value award to the Sirui K-40x
Most innovative is the Novoflex Classic Ball 5
Most stable is the FLM Centerball 58 FTR
Even if you don't need one of these robust models, the review points out features to consider when you're shopping for a lighter ball head. Read the full review here
http://www.dpreview.com/articles/8192473209/battle-of-the-titans-top-ball-heads-tested
They gave the best value award to the Sirui K-40x
Most innovative is the Novoflex Classic Ball 5
Most stable is the FLM Centerball 58 FTR
Even if you don't need one of these robust models, the review points out features to consider when you're shopping for a lighter ball head. Read the full review here
http://www.dpreview.com/articles/8192473209/battle-of-the-titans-top-ball-heads-tested