Trend Türen / Burger experiences?

Does anyone possibly have experience with the manufacturer? Especially the Klimafit 85? Should one generally choose a wooden or aluminum door? According to the dealer, the U-value of a wooden door is better?! Thanks and 200 characters

Should one generally choose a wooden or aluminum door?

No. Generally aluminum or wood instead of PVC, yes. But not generally aluminum or wood compared against each other, that is almost purely a matter of taste (only with wood the price range can go even higher). I wouldn’t take the mentioned door at all: it is somewhat a chipboard door, so wood in the sense of wood composite / composite material. At least on my part, the suggestion "wood" here was meant in the sense of considering a door that is also outwardly wooden.

My wife would like the door in the middle with small glass and anthracite inside/outside...

Is the basic design okay? Should cost 4200 including installation...