Backpack Recommendations

[squawkBOX]

What backpacks does everyone have and has anyone got any recommendations for a decent one.

Currently the one I have is terrible, with no back support and its too small for my needs.

I am looking for something to hold my laptop (15" IBM T42), along as a normal day to day bag for uni stuff.

What would you recommend?

 

[squawkBOX]

Thanks for all your suggestions - I'll have a look at each one and hopefully order one soon!