With regards the Ravens, they have stood up to the conditions far better than we have. The number of other bikes (notably Surly LHTs I'm afraid to say) that have had issues is surprisingly high. Three of a group of five other cyclists with whom we cycled with for about a week (on and off) had problems with their LHTs, mostly derailleur and disk brake issues. The fourth cyclist in the group had constant broken chains and only one other on an MTB had no issues of which I am aware.