Solid boot capable of driving many different skis. Initially, I was a bit skeptical of a boot with walk mode as I've skied a few in the past and was not satisfied with their alpine performance. The Quest for me is close to a one boot quiver, if not the answer for a guy like me, who tours and slack-country's as much as I ski on resort.
I've skied them for a solid month and have tried many different skis. Getting edge to edge quick is easy with the Quest, so on par with the Ghost, and the 130 Flex index? Who knows? But I do know they transfer power very well and can drive skis up to 130+ underfoot with authority.
The walk mode is great for booting and skinning, and the locking mechanism is solid and intuitive, once you figure it out. Place the 'switch' in the down position, lean forward to engage and when disengaging, I've learned I need to flex forward to relieve the pressure on the walk mode 'switch'. If you don't relieve the pressure, I can see the 'switch' being prone to break from user error.