English learning books

[close.css]

Hi,
I just wanted to ask about some books: Topnotch , Summit , Connect
I know that Summit has higher level than Topnotch, but i don't know about Connect books.
Can you tell me that is Connect with higher level than Topnotch or summit or..? and which is better?

 

[Tdol]

Isn't Connect aimed at younger students than Topnotch? I am not familiar with the books as I don't teach this, but from reviews, it would appear to be for a younger group.

http://www.cambridge.org/us/cambridgeenglish/catalog/secondary/connect-2nd-edition
http://www.eltbooks.com/item_spec.php?cat=079&item=4141000&lang=en