Thank you everyone for sharing your thoughts. I am also thinking along similar lines. Didn’t come to any conclusion yet, but would like to share some thoughts for discussion.
Cornèrcard Visa Platinum
500 CHF per year
Cashback 1.5%
Assuming a cashback 0.75% better than free AMEX + other credit cards, turnover 30000 per year, we get actual cost around 275 CHF per year. And this comes with lots of insurances for the whole family, which conditions I didn’t read in details yet.
A disadvantage for me is that additional cards are for free, but it is Gold, so 1% cashback. 2 Gold cards are 240 CHF per year, 1% cashback. Insurances are also for a family, but limits are lower. Silver cards are coming with individual insurances only.
Please keep on exchanging you ideas!