For me its too big, too far and when I have been the boys look disinterested and when I have driven past they are normally scruffy with the older ones smoking etc.
You won't see this with Trinity children because there aren't any older children there yet. Believe me even the best dressed teenager is capable of looking super scruffy and oh so bored!!! And believe me those squeaky clean yr7's at Trinity will very quickly morph into such teenagers.
Please do give the Tunbridge Wells schools full consideration and don't dismiss them because of the journey, they take it in their stride and it becomes part of everyday life, in fact on non-club days my boys use the public bus and are back at home in Sevenoaks at about 4.30p.m. - not that late!
Trinity and TWGSB are very different beasts, one is a school where there will be very few older children and your child will always be at the top end of the school and TWGSB is a large well established school where your children will have the benefit of older children.
Both are excellent schools but you have to decide what you want / like for your child, it really is horses for courses. Go with an open mind and have a good think about what you see and hear.