Definitely purple! Lovely reflections - I like the way they're all soft and flowing compared with the crispness of the buildings themselves. Perhaps a bit off kilter, and I'd prefer you not cut off the top of the one building, but still a very lovely cityscape.
Your horizon is a bit crooked :) I feel like the city is about to slide out of the photograph... LOL!! Anyway, your purple colour is WONDERFUL! I am really loving the reflections in the water and the beautiful light coming off the buildings. Veddy veddy nice :)
Lovely. It feels very slightly tilted and the border exaggerates that. Also feels a little crowded nad oppressive with that one building bumping into the border, but that does make sense for an urban shot!