Which laptop should I get?

Techo-educated people in blog land... I am currently home computer-less and need to reinvest!

Which laptop offers better value for its price?
- Macbook 13" black (2.2GHz processor/ 160GB hard drive), OR
- MBP 15" (2.2GHz processor/ 120GB hard drive)


What I need a laptop for;
- go online, full AV functions inc all kinds of streaming
- mess around with photos
- do work... like spreadsheets etc
- organise my life
- sit in a cafe to pick up boys (haha)

What I like on my laptop;
- big screen (spoilt with my last one)
- Internet connectivity
- that it runs fast for what I need it to do (which doesn't involve gaming)

Thank you muchly in advance