Recently went on a bird photography course to Norfolk and was looking for a Gimbal head. I am using a Canon 7d + 400mm 5.6L, have tried ball heads etc... but they are awkward for moving birds on branches let alone for BIF shots. I have seen various write ups for expensive Gimbal heads costing £400+ which seemed overkill for my set up. I have also seen other write ups on here for Lensmaster Gimbal heads which were very positive. On the basis of this I ordered a RH1 unit (£117) it arrived promptly, build quality is good and it comes with all the necessary parts to mount the camera/lens. The most important thing is that it works really well, so much easier to track the bird as it hops along the branches or in full flight. I compared the action of the RH1 unit to other more expensive alternatives used by others on the course and I was well chuffed. I think if I had a big 500mm F4 lens I would be tempted to get a more substantial head, but would look at the RH2 first before spending a lot more on an alternative. Apologies if this sounds like a sales pitch it is not, I have no connection with lens master, but in a hobby where most bits of plastic cost £££'s it's nice to find a relative bargain. Thought it was worth sharing the feedback, as I have benefited from others doing so before. Regards Neil.