Bloody miles and miless away!!
I might go look at the Mantra after work as the guys who service my bike are Saracen dealer and think they have the pro in stock so can see what its like for size and get the Trail if its the right bike.
I like the look of the Kili, but the pro seems to have a worse fork than the Mantra.
Lastly, the Genesis, and although the spec is not great, I have been hearing good things about the frames.