Knowing what I know now I would never have wasted money on a Digisight opting instead just to save my pennies for the thermal.
People often say this, but it just isn't true in most cases. Unless you have the big bucks, you don't buy a Ferrari as your first sports car. You tend to ease into it. Maybe you get a Mustang, then a 'vette. Later, you go European and try a Lotus. Then you get the Ferrari.
Everybody knows Gen III is good. Everyone knows thermal is good. What nobody is sure about is whether they really want to invest that much into doing something they just aren't sure will make the benefits worth the expense. So they try out something less expensive and see how it does for them.
You didn't waste money on a Digisight. You learned about NV. You learned about night hunting. You learned the advantage of NV for hunting at night and you learned whether or not you enjoyed doing so without having to sell your first born child to figure it out.
By contrast, a buddy of mine got a Digisight, then came into a bunch of money and bought all the high end gear the dude at the counter could sell him. He got multiple PVS14s. He got an LWTS thermal, being assured there was nothing better and that it what the Spec Ops guys use, so you know it is good. He got a PVS24, for times when maybe the thermal wasn't right. In the end, he has a PVS24 that he doesn't use and he got a thermal that just doesn't perform as well as other thermal gear out there because the LWTS, while good, isn't exactly cutting edge technology or meant for longer range hunting (and so he has some real issues with it). Going all in first can result in the spending of a lot of money on the wrong things.
You spent $1300 on what you think was a waste of money. Imagine spending $12,000 on the wrong thermal and another $8,000 on a PVS24 he doesn't use.