I need suggestions for an entry level mtn-style bike to ride while riding with my 9 year old son. I would guess that most riding will be on pavement or flat ground, but I want the ability to go on a trail if needed.
Let me state that my son is big for his age and he is in no way an aggressive rider.
I am a big guy and prefer a somewhat upright riding position.
All suggestions appreciated. Will accept used or past year models.