I went through the sort of thinking you are going through. So I will share some thoughts.
The x5s camera will not work on the Inspire 1. Conversely the XT thermal camera will not work on the
Inspire 2. The x5 camera works on the Inspire 1. Both the x5 and x5s use interchangeable MFT lenses.
You can do the spec comparison between the x5 and x5s, and conclude that the x5s is better, but I have a hunch that on the final product it is one of those differences that show up only with side by side comparisons. I have a Phantom 4 Pro which has a 20megapixel camera and an Inspire 1 x3, which is "only" 12 megapixels. I happen to think the x3 end product is better than the "better spec" P4P. In other words you might conclude that the x5 on the Inspire 1 is good enough.
The Inspire 1 is a hands down great machine. It has (among many other things) master/slave controller ability, landing gear, and independent pan on the gimbal. It doesn't have some of the super stuff that the
Inspire 2 has, but that comes at a cost. The
Inspire 2 has two battery ability; for the Inspire 1 you can just land and put in a new battery, or get a two battery modification available from many independent dealers.
My assessment is that for still shots, panoramas, and thermal work the Inspire 1 is all you need. For video work there are advantages to the
Inspire 2.
The Inspire 1 v2 has a motor upgrade, propeller upgrade, and gimbal dampening plate upgrade, all which make it ready to add an x5 camera if you get the $5 landing gear extenders. It comes with an x3 camera, which you can repurpose to an Osmo device when you get the x5 camera. The Inspire 1v2 comes with a travel case which you may or may not use. The travel case requires removal of the camera and placing the landing gears in travel mode.
