I get the 50 and I could get 100 but I don’t need it.
An alternative would be Vodafone/UnityMedia, however I keep hearing a lot of negative things about their customer support. With Telekom I have not had any bad experiences yet, although I am sure others have.
1und1 is only a Telekom reseller (so never faster) but they reportedly have pretty fast support.
My parents are happy with it so far.
Usually the Telekom is a few Euros more expensive than others (they are legally obligated to, because they have a monopoly, they own the telephone lines).
I use a rented router, which works fine so far.
I had one that failed and it was replaced within less than two days. A lightning strike destroyed another one, and that was replaced within three days.