Wow, I must be the only person who just can't stand that purple-ish gray color on Jazz. I do think the shinier white looks better (though I wonder if the actual figure will look like that), and the additional paint apps are wonderful... But I just can't get over that color, I think Hasbro's blue is better than that. Of course I wonder why we couldn't just get a properly colored version with black and blue colors. Also the color looks more washed-out that the color in FoC, at least to me. I guess I'm just too much of a G1 Jazz fan?
As for Prime, I think he might be too shiny. Really though, I'd rather have the overly-shiny Prime with the silver parts instead of the depressingly sucky light gray on the Hasbro one. That said I really don't like Prime's FoC look, so I'll be sticking with WfC Prime.
That said I would consider getting FoC Prime if they made a voyager version with a improved transformation (not
just an upscale).