I have years of experience with PIC microcontrollers, Arduino etc. I am looking to get started with ARM architecture now. I need suggestions on which product to start with? Given the following considerations
1. Popularity and getting started resources on the internet
2. Possibility of scaling up or down within the family or manufacturer ( example PIC family) depending on the application
3. Peripheral feature set
4. Ease of use
I know this is probably not the simplest of questions to answer but would like your suggestions. Thanks.