Ricky Bobby, on 03 February 2012 - 05:51 , said:
DaleE. Let me put it another way. How much do you weigh? If you are above say 86kg don't be bothered about the weight of the bike since the extra kg's wont really make a difference and cutting beer from your diet will save you loads and loads of ZARS and reduce your weight. If you weigh less than 70kg's go for the lighter one. My personal yard stick so no science or anything involved there so spare me the flaming. I moved from a light 26" HT Spez to a 29" Niner RIP 9 and in all honesty I'm more comfortable on the heavier bike and the increase in weight is not that noticeable. I weigh a beefy 91kg's and do mostly the type of riding you do (ie long hours in the saddle, hence comfort is king). First and foremost find out what works for you and buy accordingly.
2.3 kg is a massive difference no matter how much you weigh. The OP would not repeat his 3:10 Argus carrying an extra 2.3 kg.
Both bikes are full sus so will be more comfortable than your HT anyway.
For the same money go for the lighter bike every time if both are dual suss. And don't stress about wheel size.