Swiss is for sure the best employer, especially if you want to build up your life in Switzerland. But keep in mind that you may not experience all career possibilities. My dad started at a legacy airline at the age of 38 and pensioned as a 737 captain at the age of 56. Don't know the pension age at Swiss, but you career path might look different compared to 20 year old colleagues on the same list. If things start to slow down, you might be stuck at the A220 rhs for years. Do you want to become widebody captain in the future?
Good luck with your choice.