Actually, I think that is sound advice that I am going to follow

it's excellent advice and makes total sense. Thanks for passing it down.
Now, not to sound condescending, believe it or not, I already thought about that myself and had a conversation with myself about it. My conclusion? I figured I had one way around it and one way only. I could just start out by buying the best of the best in all categories. Now, I know the Zeus 640 3-24 75 I got is not the best of the best, but it's sure the best of the best for a guy like me... I was tempted many times to buy a lesser unit, but it just didn't make sense. If I start off at the top, Id have no regrets later about new and improved versions, or wanting later on to get a nicer unit once I had learned what I was missing with the lesser units.
The only thing better I really could've got was a 100 mm 60 hz. Several thousand dollars more for something probably I wouldn't use. As I said in another post, my heart longs for a 2X with the 75mm or 100mm lens. That was just not offered by Armasite that I could see anywhere, other than then a smaller lens which I was not interested then. I knew I wanted to 75 or 100. The trade-off for 75 versus 42 was not enough for 2x to 3x. And I had also decided I wanted to go with the Zeus. They seem to me to be the best company out there. All things considered.
Even then, I realize some basic limitations. I drove by waffle house the other day and for kicks I pulled out my thermal vision and it really hit home at how it doesn't see through glass. And I thought to myself, these guys could be having a meeting with 50 people in there with guns and cannons and a nuclear bomb and I wouldn't even be able to see it!!! Boy that's a major limitation.
For the PVS 14? No problem at all, I could see everything I wanted to see inside the waffle house. Then I thought of another scenario with thermal vision even scarier. Of course this all refers to a **** hits the fan possibility. I'm walking behind a house, some guy cracks open his window to the bathroom and sticks out a shotgun. I scan the back of the house I don't see a threat. I casually walk by said window and casually get said head blown off at shoulders. Yep, I'm convinced that I need a PVS 14.
Of course, somebody could be hiding behind the bushes of the same house and my PVS 14 didn't see him, I casually walk behind same house and he blows the same head off with the same shotgun. And seeing as how you never know which one you need, I can now understand your dual set up.
One of the sad parts of it all? Both of these devices can be one upped with my Fenix 4000 lumen tactical flashlight. Of course I would probably give my position away
So again I say, as long as I stick to using my thermal for a living off the woods scenario and using it for hunting I think it's a choice, because all animals are enemies if you look at it like that. No chance of killing a friendly in other words. But the tactical? I'm starting to lean towards night vision.
With that said, since everyone slapped me in the face for not giving the vendors a shot, hello Armasite vendors? Anybody want to give me a killer deal on a Gen3 night vision device? If I'm not mistaken, there's absolutely no reason to get a weapon mounted version, as long as I have an IR laser mounted on the weapon it would be the exact same thing correct? So vendors, throw in a nice IR laser to go with it.