im in the market for a small laptop, need to stay connected and portable all the time now and i don't want to lug around a big machine. ive been looking and having a play with these three, any others worth considering? opinions?

p series, mini 100 and the air,

http://www.sony.com.au/product/vgn-p13gh

http://h20424.www2.hp.com/campaign/c...ni-1000/glance

http://www.apple.com/macbookair/

at the moment im favouring the p series, simply because of its size.