I'm tempted by one of these rather than the Manfrotto kit as they are significantly cheaper. I doubt I will be doing enough 'hardcore work' to warrant anything more decent. The 2 models I have shortlisted are the CX-540 and CX-560. They seem a decent mid-size model. From what I can see on the website, they have almost identical statistics (height/weight/max load etc) but apparently the 560 has an aerodynamic design. The difference in price between the two is minimal (£30 vs 35 delivered on Amazon). Is this just rubbish, or is there some truth in the 'aerodynamic' design?