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The biggest difference is going to be the weight. That's going to make your KC fell a lot less stable than the Star. It should be still be a great straight line flyer for you. The Pro plastic will also "beat in" more than the star. You'll probably end up with a great straight disc for shots 270 and under. You should also be able to use it as a beautiful slow anhyzer disc.
Conclusion: you'll love this one and probably be compelled to get another one at 175g for a slightly more stable version.