I can only relate to MY 2018 Platinum when I compared it to the Sport. Both had the same engine and same drivetrain. Acceleration seemed to be the same. The Platinum had more creature comforts than the Sport. The Sport seemed a hair stiffer. Both were fun to drive.
One upgrade I did which made a handling and ride difference was to ditch the Hankook tires. I put Continental DWS 06 (V rated) tires and its so much better......much quieter.
In don’t think you will go wrong with either, but if you can go Platinum, do it.
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