First: if I wanted to show off, I would have posted pictures of my house, my cars and my girlfriend. Come on, people on this site have their computers listed as a signature! I don't, although, I have more Apple stuff that I care to admit.
Second: on the picture, the middle one is a 2.4 GHz MB. It had a cheap and nasty screen, completely a disgrace on a laptop in this price range. I used the Air for typing and business trips, but my colleagues kept complaining about the noise that little piece of... computing wonder did.
One of these computers have a self-exploding device inside in case the police comes... only joking.
15" MB Pro for family, fun, movie editing (Firewire+slot), although it had the faulty NVidia chip.
13" MB did not have Firewire, it did not have a screen that was acceptable for typing for any length of time, but the graphics was good otherwise.
13" Air was light, portable, had very good screen and power consumption, but was noisy and video performance was very poor.
But as I said, a 13" MB Pro replaced the MB and the MB Air.
I am sorry that Apple makes so many mistakes and there are so many half-baked products. Two computers should be enough.