The frames of the three you listed are comparable in quality, if not exactly the same. I would get the Clockwork because, like others have stated, it has better hubs.

The Kilo has a better tube set and a better crank set, but has a more aggressive geometry than the three bikes you listed.

Words of advice:
Search before you ask (this question has been asked and answered many, many times before). Cut the attitude and get used to not getting the answers you're looking for. This is an internet forum. Da der.