I think most have been said here already, but I can vouch for cube being great quality and extremely good value for money. Whether or not you go for a higher spec (1. Action Team, 2. TM, 3. SL , 4. Race) depends a lot on how demanding and sensitive you are to improvements. (There is about 500€ between each step)
As in most things, the more expensive it gets you get diminishing returns, but in cube you get very much for your money with each step.
Personally, I think the 140 TM is one of the best specs out there of any brand, but with any cube bike you get good value for money.
Finally, cube has in my opinion the most comfortable seating position of the brands I have tried (although not the most aggressive for very agile riders).
In terms of noise, it is true that Bosch is somewhat noisy, but cube is no more than any other bike with Bosch. I basically only think this is a problem if you ride cushy mud trails a lot, because if you ride on dry dirt roads or rocky trails, the noise from the tires will drown it out.
In summary, more than being about cube, this is more about if you like Bosch. Bosch is a great climber (the best in my opinion) but with the drawback of the internal drag over 25kmh. If you don’t do many fast straights, this is not a big deal. If you do, look at Shimano or Brose or Flyon (TQ).
Either way, I agree with the former post that the biggest change of any in terms of ebiking is hard tail to FS. In fact, when I am president of the world, I am going to ban hard tails (Surprisingly, no one has voted for me…

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