I don't mind the Evo X interior.Yup sat in the both cars before purchase. Evo X seats are what make the interior, very comfortable. Also the inbuilt GPS/Radio/Mp3 and Xenon lights you may miss out on?
Go Evo 9 and earlier for aesthetics and a more 'raw' car. Evo X if you want a fast/comfy daily.
Wifey went from a 40kw Barina straight into the 300kw Evo X and she has not issues driving it everyday.