What bike would be right for me?
There are far too many options and it's far too subjective for someone to give you a straight "get this bike" answer. 

You're kind of talking about the "All Mountain" to "Enduro" range of bikes. Ie bikes that can go long distance but can also go downhill. 

The all mountain type bikes typically start at 140mm-ish travel. The cube you link is one of these.

The enduro bikes typically start at 160mm travel. Cube do the 160 version of that bike too. 

The difference is, less travel, better pedalling efficiency, the more travel, better downhill efficiency. 

You just have to decide what is more important to you, having a nicer time going uphill and sacrifise some of the down (get an all mountain). Or just be good enough to go uphill, but the downhill is the main point (get an enduro).

For decent bike, like your cube, the difference between the 140 and the 160 will be marginal in terms of pedalling and downhill. 

You just have to decide, on which side of that margin you want to be.