Tibia doesn't require any more surgeries than femur.
My philosophy is that if you have the time, you should limit invasiveness as much as you can, by going for a fully external device. The full-circle Ilizarov frame is more stable than a half-circle Ilizarov frame, which is in turn more stable than a monorail.
Skill is highly correlated with price. I think you should go to the most expensive doctor you can afford.