Just as a reminder, this is FACT opinion.
Sonic should be Ryan Drummond. He sounds young and energetic. Jaleel White (AoStH guy) isn't bad.
Jason Griffith just sounds weird in a really... well, weird way.
Tails needs to be a real boy. His SA voice (Corey Bringas?) was very good,
especially considering that he should've been too old by the time of SA2.
But he sounded really bored and emotionless at times in SA, and he sometimes
sounded like he was reading in SA2. Bring Bringas back, and take time to rerecord when necessary.
Knuckles needs to sound young. This is where 4Kids fails. He should have a deep enough
voice to fit his toughness, but make it too gruff, and he'll sound like an old man.
Oh, and don't make it too deep, either. (Sorry, Ryan, but you should stick to doing a Sonic voice.)
Amy probably sounded best in Sonic Adventure. Er, no, wait... she sounded older in SH,
which was kind of good... or was it, since she is only 12, and a younger voice would fit,
especially in SA, where she's a chubby, little kid. Her 4Kids voice can be too squeaky and shrieky. Aagh.
Big and Gamma sounded good in SA. Don't mess with that. (I'm talking to you, 4Kids,
with your robot chipmunk for Gamma and weird, high-voiced guy for Big.)
Robotnik sounded pretty good in SA, but I liked the similarity to Long John Baldry from AoStH.
So maybe he's better. Not that it matters, since he died right after Deem Bristow.
So there's no hope now. Mike Pollock (4Kids) sounds too much like the regular announcer guy
that he is sometimes, and other times, he has a high, scratchy voice.
Back to Deem Bristow: he sounded less like Baldry in SA2, and in SH, he just sounded bad.
His voice was often high and scratchy (Sega set him up to be replaced!!!!),
and his American accent came through when it wasn't supposed to.
(Listen to the part in the Last story, where he says, "It's useless! Metal Sonic has
combined your data...", and so on. That is a great example of both flaws.)
Rouge needs to sound young. Again, 4Kids messed this up. As someone at another forum
pointed out, she should sound mysterious. But I don't think it should be that way,
if it's at the expense of her youth.
Shadow sounded good in SA2. I saw a video of ShtH, and he sounded surprisingly similar.
Except, being Jason Griffith, he sounded a little like the same actor's Sonic voice at times,
and in one place, he sounded too much like a superhero.
Cream is terrible in both. I don't know which voice is worse. Maybe 4Kids's is worse,
but SH gave her worse lines. But then, she was pretty squeaky-sounding in SH,
even with more realistically kiddish lines. "I'm so happy, I want to tell everyone!" "Please stop being bad!"
I can't complain much about Storm and Wave, but Jet sounded more like a cartoon chicken
than the "cool dude" I expected. That, along with his weird GCN-rendered cutscene model,
made him hilarious to watch. Also, he is the only character who actually used another
character's voice! (I've heard Deem Bristow start to use the wrong voice,
but he didn't actually deliberately try sounding like another character.)