Best bank for mortgage

My wife and I are planning to buy a flat/apartment in the next 12-18 months. We bank with UBS but did hear from a colleague that they had better client service and overall start to finish experience at a local cantonal bank when they shopped for mortgage (we live in the canton of Zürich). Do you agree and if so, which bank would you recommend when it comes to a home mortgage?

Thank you in advance!

Would perhaps choose an insurance co..

https://www.axa.ch/en/private-custom...mortgages.html

I’m happy with the UBS. But we actually got that mortgage with the SBC.

But Key4.ch, a UBS subsidiary, has better rates