I use it enough to justify the cost. And when I use it, its in a spot where the extra control is nice to have. I use it more so going down than going up. It lets me go down steep/technical stuff without having to use the brakes...
Frankly, for a 2-speed case with 4:1 gearing behind a stock engine, I don't know that spending twice on the Atlas is worth it. Grab a Rubi case. I certainly haven't used the front dig capabilities of the twin stick more than a couple times... I'm sure others will disagree!
I’m a fan of the 4 speed too.
The low/low(10:1) is a little too low for me but, like JC, going down technical stuff it’s really nice.
What I really like is being able to swap from the 2.7:1 and the 3.8:1. It doesn’t sound like a lot but, for me, there is a difference there that I like.
Always good to have choices. But in the long run, nothing wrong w the 2 speed