Dont paste text form a word processor into boards. Whet they frequantly do is change quotes and other marks to typographical alternates to make best piossible printing (and unicode meaning). Unfortunately the web does not liek all the out there versions of these characters.
The board will cut at these places because they could imply a attack on the server.
Anyway best isnt defined. But in general since guis are usually single threaded the fastest processor around is the really onl alternative. And dont look on the number of cores here just the raw power of ONE CORE