I've had 8 bodies that have all been gripped and the only one I've had with a genuine grip is my current 70D, which I got because there wasn't a 3rd party grip available at the time. All the rest, including my current 5D3, have had Meike grips and they have all been fantastic. I've carried all sorts of lenses attached and had no problems with weight issues, the rubber is still perfect on the 5D3 grip and I've never had a moments problem with any of them. The first Meike grip I got was for my 550D almost 2 1/2 years ago and it's now being used on the wifes 650D and still looks perfect and works perfectly. I've also used 3rd party batteries (as well as genuine ones) in all the 3rd party grips with no problems either. TBH if there had been a Meike grip out for the 70D when I got mine I would of had one straight away. I've saved enough money to get a couple of good lenses by using 3rd party grips, the build quality and feel is virtually the same as genuine Canon ones.. only about a third of the price.