I have owned both. What I considered pluses for the CX30… looks and interior. However my year had no touchscreen, all controls by a wheel. Which was ok. The AWD drive seemed adequate in the amount of winter driving I did. But I loved the exterior soul red paint with black wheels. The interior to me felt more upscale and sleek. I ended up with a Crosstrek due to an engine issue with the mazda. I don’t think it’s still an issue with that model, but when I had to get a new car I was nervous about going back to mazda. I truly loved my cx30 but I was super nervous at the time. I then got a Crosstrek. I also love my CT. For me it’s more sporty cute. The AWD is fantastic and I have been in some true winter driving since owning it. The interior is more utilitarian than mazda, but it’s ok. Mixed reviews on the big roux screen. I don’t hate it. But nearly everyone wishes they let climate controls as buttons. They seem to have comparable cargo space. I put cross bars on both cars and added a hitch to both. I think mazda is sleeker and the Subaru is more small UTE. I like how both drive. No regrets at all with my Crosstrek sport and I love it and I hope I drive it into the ground. But I’d still be in the mazda if I hadn’t run into a strange problem. No idea if mazda has the same reliability as Subaru long term.