besides - & + EV, did you try slower shutter speed?
can i suggest trying Various - & + EV and also vary the shutter speed?
the you choose what is the best and merge them. i use photomatix, you should try it. its free except it has a watermark when not registered/paid.
the sky also play an...
very clean and crisp, especially the 2 blocks in the background.
a little like those pictures from the new showroom pamphlets.
how long was the exposure? i find the 2 yellow lights a little distracting.