I'm so torn... There's a lovely prep school, relatively close (15 min drive) and it only has 123 students - from age 1-11. I'd want mine to start at Pre-Reception.
It's very family-like and has great pastoral care (which I think is more important than results, for sure).
It's reasonable price - it's £21 a morning session for Pre-Reception and then £2,900 each term up to Year 6. That includes lunch/swimming, etc.
Then there's an 'Outstanding' state school which is walking distance, it's a lovely newly built building. Then friends he met at school would most likely be in his village too... So that's a bonus, and most likely to go to the same secondary.
I'm struggling to decide 
if your kids go private, why is that? If state, why did you pick that? I feel they both have good benefits!