Takara Prime is painted red while Hasbro is red plastic.
Eyes are a darker blue on Takara. Looks kinda dead.
Inside of trailer is painted on Takara, Gray plastic on Hasbro
Takara doesn't have paint apps on the running lights, Hasbro does.

Really it comes down to what scheme you prefer. I'm more than happy with my Hasbro version, but can see why others prefer Takara.