Logitech is and RECOURSE Edelschrott

Now I am again landed at Logitech, despite the known lack of durability of the microswitch. In the free-running wheel, I would like to do without. Pity that there is only from Logitech.
I'll keep the account and change the part in case of defect, as often as possible.

Addendum:
After 16 months came what was to be expected. The left button provides increasingly double (as with all my Logitech mice previously well). Therefore written down to 2 stars.

For the Amazon service, however, I forgive 6 out of 5 stars. I just called there, and was offered a compensation promised for tomorrow at noon. Whoa !!! The problem was known there apparently.