I use the 494 RC2 with a Joby Gorillapod SLR Zoom and Canon EOS 450D and whilst the 494 appears a little over-engineered for the job, it works flawlessly. The Friction Control is a real boon, allowing simple and accurate positioning without impeding smooth movement, and the lock-lever is so easy to use with the ability to rotate the lever independently of the locking mechanism so that you can align the lever to your preference. The quality of the Quick Release has also blown me away, it's cast metal and very strong, and whilst the locking safety pin takes some getting used to, in no time securely mounting and dismounting the camera becomes second nature. The 494 is a quality piece of engineering and is in my opinion definitely worth the premium over the entry-level basic ball-heads available from the likes of HAMA.