So a lot of my games, I throw out the inserts because they are SO USELESS for organizing the game. I do a lot of just baggie everything up and toss it in the box.
But I have exceptions --
My Pathfinder Card game and Dominion sets are all in hobby lobby art cases with either Broken Token or Go 7 Gaming organizers.
Another company I found in their last kickstarter and really like is Folded Space. They do foamboard inserts..rather than the plywood that BT and Go7 use - which makes them lighter, although maybe not as durable. I'll have to see on that.
I actually had done a home-made KDM organizer based on plans off boardgamegeek (but modified a little bit). I decided to get the Folded Space insert for it.. and replace my homemade version. I'm still on the fence over all with it. It's much more convenient than what I had in some ways because rather than TWO big containers for all the cards, it has like a dozen smaller containers. The downside to that though is that means a lot more space used up by the containers.. meaning less room for cards. Also I'm not quite happy with how I've got them organized in those containers yet.. I can adjust that, but it isn't as 'easy' as with the two big containers when it was "this one is monsters" and "this one is nemesis and settlement cards".
But I also got Folded Space organizers for a couple of other games, and really like how they are set up - so may watch for more of those in the future.