Steves answer is a good starting point as to is Deven's but as Collin pointed out, this is way over the top to answer as these days what with fpga etc. What normally happens is a company will have a specific requirement That specification is taken to a designer within a company that designs and fabricates microcontrollers
He then takes that specification and designs a mico to suite that purpose
Brearing this in mind Your answer is. ....... There are no best micro controllers You either choose a micro that best suites your needs from the comercial market Or you have one custom made for you which then entials otders of 10 000 to 20 000 and more and costs enormouse amounts of money
Choice is simple when presented in this manor for studying or learning or development You buy what suits at that time from a comercial market and that which is easily attainable in small quantities at best price which means either Ebay Rs components Farnels or one of the main distrubutors in your country Other than this Micro controllers pic atmel etc etc There are many different makes are governed by franchises which are strict rules and regulations, pain in the rear useless rules when it comes to the like of ordinary people which stipulate under what conditions you may market thier products Waste of time rules normally, ,preventing bussiness as a rule, ,and you have to sign aggreements to correspond to these rules Or they take the franchise back from, which they do anyway even of you dont break rules or contracts, which can and does send companies bankrupt making lots of people unemployed, bankrupt, leaving them with huge debts, and homeless, culminating into international arguments and finally wars which errupt from time to time. ....Trade Wars
The true conspiritors of the worlds economic depressions and world poverty especially in the UK and elsewhere which can and does have enormouse global reprocussions. ,nevermind any of the other filthy tricks they get up too from time to time
Nevermind! !
Not very nice some of them STILL There are a few companies left that dont quite carry on like this thank god! !
