I had a Meike grip for my D7000 and to be fair it worked great I never had any problems with it what so ever , so I got a third party grip for my new D810 (I should point out it was not a Meike ) , it worked for two weeks then started playing up , it started firing the camera off at random and sometimes it would not work at all, a friend told me he had a third party grip for his canon a few years back that went tits up and damaged his camera , the camera ended up with no auto focus so I sent the grip back and got myself a real Nikon one and must say its so much more better made, its solid because its all metal unlike the other one, it locks on to the body 100% so there's no movement , yes it cost a lot more but I got to say it's well worth it if you use it all the time. By the way I don't work for Nikon and must say if I can save a few quid then I will but in this case I think I did the right thing , from now on I will always go with the real thing because it really is that good.