Hahah good work! As the proud owner of a TX and an SZ series vaio, whilst my brother who I see once in a while is a mac habitual with a macbook, all I can say is, he gets jealous, and I don't....
Seriously though, the TX is a great piece of kit if you want uber small and light, whilst the SZ is still so small and light that people comment on it, but is significantly more usable over a long period of time (eg as a primary computer, for dvd watching, spreadsheets etc etc.) The keyboard on the SZ is also a little nicer than the TX and the performance of the SZ is noticeably better (although that's not to say the TX is exactly slow!) Connections/peripherals wise they're roughly the same, although IIRC (I don't have it with me) the TX doesn't have an SD card reader, although I might be mis-remembering.
Both good bits of kit, and the SZ is comparable to the macbook, although (in my opinion) better looking, whilst the TX is light years ahead in the portability stakes.