Good
Great, besides everyone having voices that can be heard, most voice acting have proper emotions embedded.
Sonic's new voice is a little too high pitched imo, but he conveyed so much in all his lines, I can get used to it.
Sound effects are still a little bit of a problem, though. Some sfx from fighting sequences are too loud, and others are almost impossible to hear.
And I noticed there were some times I really expected a sfx, but none came, as when Sonic dodged Prime. There are more, but I can't remember now.
Milanous, you talk too fast! hehe, do Cody's lines a little slower, please.
Cody's explanation for Sonic's behaviour, as well as his own, was really cool.
Something that has bothered me since the very first animation is... close cameras to the characters. This is a sprite animation, so they don't look good if it's that close. That's my opinion, anyway.
Also, when you have to change or stop the music, don't do it so suddenly, try to fade it, or edit it so the ending gets there when it needs to be there. (But don't overdelay the scene for it!)
There is nothing as epic as music starting/changing/ending in key points of the story.
About the story, I kinda didn't like the way Sonic was acting. Crying, saying "leave me alone" and running away... I could go for a pissed of hedgehog, but not a emo hedgehog. We have Shadow for that. (where is he anyways? Revive him! hum... maybe not.)
I'm not saying Sonic should be happy all the time, he can be sad.
Oh, damn, that's all I can remember right now.
And actually, no matter what flaws were in my opinion, I'm still rating this 10/10, because I love the series, and I know you (all) work hard on it. And, in spite of whatever I said up there, the animation was way way waaaay better than many others.
I hope I gave constructive criticism xD
10/10,
5/5,
no doubt.