Personally, my favorite part of the Sonic movies is that Colleen O'Shaughnessey was allowed to reprise her role as Tails—especially when he gets a more expanded role in the sequels—and that she has been an active part of the press tours and marketing for these films. After all, she is one of my favorite voice actresses, and I've always enjoyed her work in shows like Danny Phantom and The Life and Times of Juniper Lee. Her return was one of the few pleasant surprises to come out of this entertainment industry in recent years.
And I will admit that Sonic the Hedgehog 3 was a fairly solid film, especially with how they incorporated Maria Robotnik and Shadow into the storyline. I am definitely interested in seeing where the franchise goes from here.