Enjoyed the book, though a few things were too scarcily explained: Voldemort and Potter have a wand with a hair from the same unicorn. Bit too much of a coincedence? It is briefly explained that Harry tried a number of wands and he chose the one which "felt best". So ok, we can go along and assuming his ever-existing link with Voldemort, this kind of makes sense.
But suddenly explaining that two wands of the same source can "clash" at which point one of them starts to regurgerate his last spells... nah. Make it a battle of will, power, mind, emotion. This is pulled out of a sleeve.
