My only concern would be the lack of really narrow tires for 26" wheels. I think 32c is about as narrow as you'll get. If wider tires don't bother you (they will give you a better ride on rough streets), then I'd go for the LHT. Lots of folks to brevets and other really long rides on them, so they can't be that slow/heavy

The Cross Check does have a very long top tube for the frame size (as do most cross bikes).

CA