I picked up my 13" base MBP this morning. I have a 3.5 year old 15"MBP which I have donated to my children for school work, garageband etc. I love the portability of this and couldn't afford the 15". In two years, I shall probably donate this to them and get a new 15". It is much snappier than my older machine, the trackpad and screen are much improved, graphics probably similar (I don't game much anyway), but the battery - woah! I think it's horses for courses. There's no way you would get me back to windows 
It's the perfect computer for me and for 3 years to come, so I'm happy, and not spent any more than I needed to.
It's the perfect computer for me and for 3 years to come, so I'm happy, and not spent any more than I needed to.