Up front I will admit to having a bit of GAS as part of my motivation. I've been a moderately serious amateur since retiring 15 years ago. I started with a Nikon D60 then moved up to a D300S and settled on twin D7200s several years ago. I also have a D500 but haven't used it in the 3 years since I purchased it because the controls and settings are simpler (at least in my mind) on my trusty D7200s. My walk around kit has the D7200 with a 18-300mm lens. When I need or anticipate needing more lens horse power, mostly for wild life (I live on the Maine coast), I grab my other D7200 which has the 200-500mm always attached and at the ready. When I'm on a shoot, I virtually always have both cameras with me. I'm am not a technician by any stretch but I have a knack for decent composition so sometimes I hit the jackpot and score a great capture. I've been published a few hundred times in our weekly county newspaper and have been in magazines and tourist pamphlets published by the state. I've also received recognition a few times from the New England Newspaper Association, but mostly I'm just a retiree who loves shooting in RAW and doing post-processing in Lightroom & sometimes Picasa, and I get my kicks from the Likes on receive on my FB page when I post a good image. I'd like to purchase a new rig, mostly because I can, and have pretty much convinced myself that a Sony Mirrorless A7III with 24-105 lens could keep me busy for a while, and will likely be as good as, but not as heavy as, a Nikon D850 in combo with one of my other Nikon DX lenses (I have several). The D850 has been in my headlights for a while but I'm inclined to try a lighter weight rig. What say you folks who've considered or done a similar transition already?