I'm starting a new board using an MSP430, preferably the 5 series. I'd like to pick a part that is readily available and more likely to be in stock over the long term from one of their distributors. I'd like to go with a BGA part, but from my experience, those parts are the least likely to be stocked, and you're better going with leaded. That being said, I'd prefer a smaller package. When I've used other manufacturers processors, they had what you would call the "flagship" model of processor and then other parts within that series that had less functionality.
Processor P8051-M7-430 would be the standard part and there would be other parts that were less likely to be in stock within the series, all with varying degress of functionality of the "flagship" part with part numbers such as
Processor P8051-M7-433, and
Processor P8051-M7-439.Typically the flagship processor was on their eval boards and in stock with their distributors and if for some reason you need another variant of that part, you would have to do a minimum order of something like 3000 from the manufacturer directly.
Is there any rhyme or reason behind which MSP430s are more likely to be stocked or is there a standard part/footprint that is more likely to be stocked at distributors because of it's popularity?