I have two homes, two heat pump dryers: one is a Miele T1 (TDB230WP), the other is an LG (RH90V5AV6Q). The LG is just better. It actually dries clothes on the first go, whereas with the Miele sometimes I have start another cycle. The Miele has a sponge you need to wash every once in a while, the LG cleans itself. The filter sponge is always clogged before the machine actually warns you to clean it. It only counts the number of cycles it did since the last cleaning, so it becomes pretty much random after a while.

The Miele never seems to know how much is left from the program, as it tries to "intelligently' update the remaining time, but it always fails to estimate it right. The LG always knows and its always dry on the first go.

Take it from me, because it's hard to admit after forking out all that money for the Miele. The LG was maybe half the price of the Miele. From what I can tell, it is also built more solid than the Miele. Using the T1 always feels like it is the cheapest Miele, and indeed it is, so they let themselves use more plastics.

Also with my T1 I couldn't change the opening direction of the door, on the LG it took maybe 10 minutes.

I am not saying the Miele is bad, but I do prefer using the LG. Also the one you ordered is a higher-end model.

Worth to mention that in terms of longevity, I am not sure, as both machines are fairly new 2-4 years old. It's true that one of my washing machines is a Miele and it is 15 years old, never had an issue.