You’ve layed out some challenging requirements here. You’d like a small SUV with a bit of ride comfort and clearly a bit of performance too, given your question about the i30 N.I think you’ll find the ride harsh on the i30 N, especially since you found the ride on the Kona harsh already. Keep in mind the i30 N is a hot hatch and has the suspension to match.I find the Subaru XV has very nice ride comfort for the small SUV segment, but I also feel that you will be disappointed with the performance from its 2.0-litre engine. You may also want to consider the new Hybrid Toyota C-HR. The Hybrid drive gives it a smidge of extra kick and it’s a fuel consumption hero, too.For a better blend of performance and ride, really only the Volkswagen T-Roc and Skoda Karoq are going to excel in the small SUV crowd. In terms of ownership both now have five year warranties, and you can (and should) pre-package five years of servicing on top at a discount.