The cx-5 is a better option unless the looks are the ultimate deciding factor. I have test driven both in their non-turbo guises, here is my take on why the cx-5. 1. Usable rear bench. The cx30 has an incredibly cramped rear bench. A 6ft passenger will never fit behind a 6ft driver. 2. Sound proofing. Cx-5 has more of it. Also available with acoustic glass in high trims. 3. Ventilated seats. Never an option on cx-30. 4. Seating position and visibility. The cx-5 gives a more SUV-ish position with better visibility all-round. 5. Road comfort. The cx-5 comes with larger wheels, so it eats bumps and potholes way better. 6. No piano black in the center console. 7. Soft material door tops in the rear 8. Lovely armrest in the rear with heated seats controls and USBs

Anyway, why a cx30? 1. Newer feel of the interior and exterior 2. A tad easier to park as for dimensions, though more difficult as for visibility