In no real order.
He has always had a distinct voice and often plays teenagers or young characters. You know him best as Liquid Snake from MGS,Leonardo from TMNT. As for me it's all in my name. He was Ryudo in Grandia II.
Roger Graig Smith.
While he has been Chris Redfeild in the RE series & Ezio in Assassin Creed. I like him best as the latest incarnation of Sonic. Since Sonic Colors. Get this he is really good. He gives Sonic a voice that is good you don't ate listening to and the voice perfectly expresses Sonics attitude.
Robin Atkin Downes.
He might be the most versatile on the list. He is so good I can't just name a few. Just check it out
There are others I like but leaving it at 3 for now
My Gaming Collection
Life?!...What console is that on?