I own both the Z5 & Z6 and they have several differences that could effect your purchase decision. I have found the Z6 is better for video and the Z5 may be better for stills, in this video I explain why?
Z5 Sample images: https://www.flickr.com/photos/avpstud...
Z6 Sample images: https://www.flickr.com/photos/avpstud...
Luminar 4, AI & Neo trial downloads: https://www.avpstudios.net/special-of...
If you decide to purchase Luminar 4, AI or NEO use the code 'AVP' to get $10 off the purchase price.