Too noisy and difficult to change
The pump makes a sort of continuous buzzing sound, even in silent mode, running at a minimum of 2500/min. Which is annoying in the long term.
Ldlc offered to take my whole tower back to drop them off. Then I have to leave and come back another day. That makes 4 return trips, bearing in mind that I'm an hour's drive from the shop where I bought it and I've already made 2 return trips (once to order it, once to collect it).
They don't want to change the AIO on the spot the same day, even though it's not a huge job.
Given the price of the pump, the price of the components, which are more expensive than the competition, and the price of assembling the tower (120€ in the shop), I find the after-sales service deplorable.