My experience with Manhattan Music has been the best I have ever had. I started four years ago and they have been the best four years I've had. I have had many different teachers and the amount of knowledge I have gotten from all of them has really helped me as a musician, without Manhattan I wouldn't be who I am today.
The service there is about as good as it gets, what ever you want it can be ordered in and you'll always get the best.
And the performance nights are loads of fun, you get the feeling of being a rock star with the comfort knowing that your friends and family are all cheering you on.
Not only is it the best music school, but also the best music shop, and I would guarantee it.