Aaaargh... wish I'd spotted this thread a week back.
I reviewed the Quest for TGO some months back, primarily on the strength of its performance on the John Muir Trail. Grand pack - comfy, good capacity, good weight...
.. but something I'd not appreciated was a weakness in the hipbelt, which came to a head by the end of the TGO Challenge in May. The front of the belt is simply sewn on to the hip fins rather than the main pack, and the right side has almost come completely apart.