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Message: <blockquote data-quote="Jack Speer" data-source="post: 3670003" data-attributes="member: 143695">Thank you all for your input. I have narrowed it down to a micro 4/3 body with 100-400 and the RX10IV. I have read that the P900's sensor is quite small and that it is tough to use the camera for flying birds, which I would like to try at some point. And while the Nikon 1 V2/V3 and 70-300 looks like a nice streamlined combination, I am liking what I am reading about the RX10 IV more.At this point I think this decision comes down to my needs and preferences. Making a list of attributes usually helps in my decision making...Micro 4/3 and 100-400 Panasonic-Leica<ul> <li data-xf-list-type="ul">Larger sensor</li> <li data-xf-list-type="ul">Higher focal length</li> <li data-xf-list-type="ul">Ability to change body and/or lens in the future</li> </ul>RX10 IV<ul> <li data-xf-list-type="ul">Smaller</li> <li data-xf-list-type="ul">Lighter</li> <li data-xf-list-type="ul">Wider aperture helps gain back some performance lost with the smaller sensor</li> </ul>Used prices say an RX10 IV is slightly cheaper, but I will try to keep price out of it for now since I think I could get a micro 4/3 system in my budget with some patience and compromise on the body.I will have a good long think on this.Jack</blockquote>