It's true that buying a new bike would bring peace of mind, especially since the BH has definitely seen plenty of action. Spec-wise the Cube comes out ahead too. Just to clarify, both bikes have a dropper post (Thomson on BH; Reverb on Cube) and double ring drivetrains.
My main problem is that I have too little experience to judge a bike from the geometry table and I will only get to ride the Cube around the block as a "test ride". The BH I rode for 50km and liked it. But who knows, I might like the Cube even better on the trail. The only comfort is that I probably cannot go wrong either way.