Well me and my wife both bought 07 Trek 4500s. We have not been able to do much riding yet but what we have rode they have been good. We had to take hers back to the Trek store to get the front derailer adjusted. I cant wait to ride some trails,but it has been raining for the past week here so everything is pretty muddy. Just an update on the new bikes. Thanks for all the help in choosing a good bike.