Coursebooks for ‘academic’ English

Hi everyone,

I was just wondering if anyone had any positive/negative things to say or suggestions for academic English coursebooks.

I’m looking for something which develops English language alongside academic skills like analysis, debate and essay writing, for teenage and adult students.

I’ve been looking at Speakout, Unlock, Top Notch, Summit and Open Mind. Comments and other suggestions would be most welcome!

Thanks in advance

Laura