Tool chain is very decent, doesn’t require any vendor IDE crap, the data sheets have less bugs that STM32 and PIC, they are easy to work with, have a decent set

Tool chain is very decent, doesn’t require any vendor IDE crap, the data sheets have less bugs that STM32 and PIC, they are easy to work with, have a decent set of peripherals and there’s a hell of a lot of info out there. The killer though? Very very long part supply lifetime. STM32 parts disappear all the time and have months of lead time. Oh and they are second sourced now with some caveats.