Question about Apple Magic Keyboard

Which keyboard layout - CH or US (international)? Hello all, I am about to buy a new macbook pro 2021 with the M1 Max chip. My old macbook pro (2014) has slowly had its day, although it has given excellent service :-). Now I'm still wavering a bit about the keyboard layout and whether I should go for US (international) or German (CH). Since I work in computer science, many former students have advised me to switch to US because it increases the typing flow. The special characters and operators are also much better and the advantages are even greater for programming work. Since I live in Switzerland and have to write in German most of the time at work, the CH layout would probably come in handy. However, since I also do some programming and write texts in English, I have now considered switching to the US international layout. My former fellow students in computer science also said that the umlauts can be written quickly with the key combination Shift "a, etc. and that you can also make faster progress when writing texts in German on the US layout. Do you have any recommendations or your own experiences that could help me make a decision? Thank you in advance for your support.