Hmm...i dunno guys, this is a tough choice for me
Myles is one of my favorite vocalists of all time. I haven't listened to a lot of Sonata Artica, but the material I did hear I did enjoy. I love bluesy and soulful rock singers, and it is clear how he was influenced by blues, rock, jazz, and soul. He has a truly amazing voice, brilliant range (spanning over 4 octaves), great tone and is an amazing musician. He is just unreal.
Jingle., let me know if you want to dig into his catalogue of music and i'll push some stuff your way. He's done a lot of interesting things in his career