[Guyver Spawn]

True, but I hope he will change it over time. The angry SSj4 voice does not work for me. My favorite voices for Adult Goku are:

Masako Nozawa
Peter Kelmais or Modern day (2010 - Now) Sean Schemmel (Both are great in my opinion)
Ian James Corlett (Not bad, but too heroic in my opinion. Sounds too much like a American superhero)
Kirby Morrow (Okay I guess)
1999-2005 Sean Schemmel (Pretty bad. Way too amateur at the time in 1999-2003. Gotten a bit better with the Ultimate Uncut/Remaster dub, but still not very good )
Steven Blum (His voice is not too bad. I blame the bad voice direction in Final Bout, not his acting skills)
Jeffrey Watson (Meh)
Jeremiah Yurk (Sounds pretty bad)