I have the atlas 5h. Tom's video covers the same likes and 'no so much's' I have with it. If it lived on the gun it would be my go to since most of my shooting is benched in one form or another. My problem is the height, would be the same issue with the accutac. vs my bench height and size. To get comfortable I have to use the 45degree leg setting, but then I'm pushing the edges of my bench. This wouldn't be an issue with a wider bench but mine are basically counter top width. I've been thinking of selling it but I've also been thinking about changing my bench.
That said, it's very stable and if you can leave the cant locked in once it's installed, and not have to take it on/off too often, i'd say it's almost worth the price jump from the standard...
Would I buy one again, prob not. At least until I found one that was less work to put on/off.