Yes, I ignored the advice and chose the wrong head a few years ago - now its showing its limitations and I'm looking into alternatives. I'm suffering from creep, twisting plates on the camera/lens and wiggle in the QR holder. Firstly - no really long lenses, so I'm not considering a Wimberly II or Sidekick. Secondly - I currently use Bogen/Manfrotto RC2 QR plates - I accept that I need to move to the Arca-Swiss dovetail system so that they plates don't twist. Thirdly - Biggest lens is a Sigma 50-500mm - weight approx 2kg - so I'm giving myself a max load on the head of about 10kg - gives me capacity for a bigger lens later. Fourth - price - have you seen the price of these things - well, yes you have. I'm in the UK, favourable exchange rate - reckon on around about $500 for a ball head + couple of plates. I was thinking.... Acratech....they have a new one coming out soon, the GV2, which looks kinda cool RRS......BH-55 Pro - but they have shallow dovetails - would this become a problem with a larger lens ? Arca....B1 Monoball with QR - proven ball head So - that's my shortlist - favourite is the Acratech at the moment. Are there any others I should consider ? Is there anything wrong with any of the above that I need to be aware of ? New legs comes next month - But I'll be heading down the Gitzo line...probably. Thanks in advance.