Hi Lukas, I'm assuming you're talking about the 7DmkII, if so Ashley (md88dawg) has one so you'll find plenty of samples looking at her profile and I'm sure she'll happily give you some feedback when she read your message.
I have the first one since 2012 and it's still my best spotting buddy. Only thing I don't like is the image noise, so make sure to chose your lens(es) carefully. All the shots I've uploaded here were taken with the 7D.
I've heard that the 7DmkIII will be announced later this year or maybe in 2019...
New airlines, new routes, new countries... back in the air