I will be interested to see what responses you get, because I'm now looking at all three. I'd be interested also in your comments on the Surly Long-Haul Trucker, which is considerably less costly. The fact that you are thinking of upgrading already suggests the Surly is less than you want. Please let us know. I don't want to buy the Surly frame and build it up if I'll immediately want to upgrade to a Heron.