I have both mods. My first Finder 167 came DOA. It was from FT and they weren't making it easy to exchange so I sent it to Evolv. They said it was a nightmare to try and get to the board and in the end had Thinkvape send them a new one for me. I wouldn't be surprised if they tell people they have to remove the board in the future themselves and send it in. It's a nice mod as long as you don't need to get access to the board.
I do prefer the Therion though. It's a bit heavier but I don't consider that a con (~194g vs ~170g without batteries). To me the Therion looks classy, feels good in hand, it just feels like a quality piece of equipment. I like that you can buy extra Battery covers. I also like the Wood/Carbon Fiber inlays. The Finder is a fingerprint magnet. Don't get me wrong, I think it's a nice mod, I just prefer the Therion. I do like the Abalone fire button though, it's a nice touch.
PM sent!
Here's a side by side picture for comparison.
Cheers,
Steve