This is an out take from my April FS. I deliberated for ages about which one to enter (personally I prefer the b&w/toned version). I am not sure which would have scored the highest, but it doesn't matter too much as the colour version was my highest scoring photo to date.
Processing was Photomatix, (and possibly a light layer of Lucis arts exposure) followed by Nik Colour Efex Paper Toner. (I love these filters).
Love the clarity and detail here. Although I must admit that the color version has slightly more impact to me (maybe because there is clearer separation between the sky/water and the buildings).