Ah the joy of the beautiful Parkers, so easy to clean.
Agreed, easy to clean (apart from the recess behind the spoke which is quite hard to access).
I'm biased but do like the Parkers. Personally I wouldn't choose the dark Seville wheel if they were no cost option and certainly wouldn't pay extra for them. The dark colour shows how fussy the design is and will be a proper pain to clean.
I spotted a red GTD in the dealer recently and the Sevilles do look great in polished and black.