user1490307837 - WL at SPJ and Sussex House. DS was offered a place at WUS.
We're also battling with the 13+ dilemma... It is very clear to me that Sussex House is great but perhaps a wise choice only if you have boarding as an objective. Not just Eton but Winchester, Harrow, etc. In fact, it is THE ONLY school that asks (in the application form) if your DS is registered at a boarding school and asks if he has siblings attending a boarding school. They cannot make it any more obvious.
The issue that we have is we always wanted boarding but are now afraid of getting ahead of ourselves and making a move now that removes some of the optionality. Not because Sussex House cannot place boys at Saint Paul's or Westminster, but because the overwhelming majority of its boys will board, so that completely changes the social aspect, relationships, etc. It also attracts a very narrow universe of boys, who have boarding as their common objective.
The other thing that bothers me is the packed lunch requirement. I find it absurd to pay that much money and have your DS eat sandwiches and crisps for 5 years straight (or have the burden of coming up with menus and options).
SPJ seems to be a fantastic compromise, as everyone here always says. It's big enough to feel like a boarding school while having the benefits of a city/day school. Unfortunately, I think our chances there are not great. Plus, I don't know enough about their track record at sending boys to top boarding schools. I know boys are obviously able to go almost wherever they want, but I don't know enough about the culture and whether the school actually encourages/helps.