Originally Posted by rgvg

In general the higher the number, the better the bike, assuming Miyata and same type of bike, same year.
The touring ones though won't come with the lightest tube set, as they are meant for loaded touring, but in my limited experience ride nicely.
The 91x, 71x, 31x would be lighter but won't have cantilevers and will have thinner tires.
And then you have the racy pro ones that don't have numbers (team, pro).

I'm trying to decide myself if I should try a long ride on my 1000LT or my 710 and I'm leaning a bit towards the 710 on account of it's a few pounds lighter.