Geetee – interesting post. I'm looking to get the Mojo HD demo bike (a medium) shipped to HftH in Dorking at some point in the near future – we should try and arrange a back-to-back with the carbon Nomad as I think that would be a killer test. The Mojo HD has the advantage that Ibis are going to be doing two sets of shock mounts which will allow you to run it at either 140mm or 160mm travel at the rear (although will require 2 different shocks).
To the others questioning the need for a big bike around Surrey Hills I would just echo GT's point – if you know where to look, there are more 6ft+ jumps and drops littered around than you can shake a stick at. Sure – they can be ridden on hardtails etc by very (very) good riders, but for the rest of us, the safety margins provided by a big bike gives you the confidence to move outside your comfort zone, then perhaps go back and ride them on something smaller. I ride an Evil Sovereign for hardtail kicks, and an Intense Slopestyle as the skill-compensator, and each has it's place around the Surrey Hills.