collar for Canon L 70-200 f4
If it fits and locks down securely without damage to the lens, then the cheaper one wins hands down! Just like lens shades and other accessories that Canon finds it needs to charge an arm and leg for -- if someone else makes it just as good for less buy it! I do when it comes to battery grips, lens shades, etc. And I have both Canon and Vello so I can make direct comparisons... little if any difference!
Holding a camera, any camera, reduces my blood pressure, calms my nerves, and gives me a sense of opportunity!