ᐅ Which satellite system is best? Does the brand of the system matter?

I had a feeling.
Thank you very much for the quick information.
I will then request offers from the mid-price range.

I’m not claiming that a more expensive system is better. But since the original question was about what was installed...

We have a 90 cm (35 inch) Kathrein dish with a Kathrein LNB and Kathrein cables LCD115 and LCD111.

If you have long cable runs, definitely do not skimp on the cables.

There is also a lot of hocus-pocus involved in something like this.
But I am the same way.
I specifically installed the cables myself so that the electrician wouldn’t use any low-quality wiring.
However, the TV would have worked anyway; it’s more for the peace of mind of the men.

Fuba 85cm (33 inch) dish
Inverto LNB
Multiswitch SPAUN SMS 5807 NF
PremiumX antenna cable with copper
PremiumX roof rafter mount

All together, excellent.
Living in a rather windy area, and the dish withstood Friederike without any issues.

Wind and dish. If you have a garage, mount it there. This offers better protection, and choosing a stable bracket is simple and cost-effective. For example, if you ever need to replace the LNB because it got water-damaged, you can easily reach it from the garage roof using a ladder. That’s how I do it. The cable runs through the roof flashing down to the ground and that’s it. Since we only have two connection points, we skipped a separate switch and used a dual LNB with a built-in switch instead. Two people, two TVs. Done. Here’s a secret about signal quality: it depends almost 100% on the TV. But cable manufacturers don’t want that to be known. I’m telling you anyway. Karsten

Mid-terrace house without garage [emoji6]
Roof access is possible via hatch/platform near the chimney.

Adjustments, disassembly, etc. are not a problem.
However, this should definitely be taken into consideration.