Hope you'll find the way to convince your dad. Which one to buy, as the guys already said, it all depends on your demands; if you don't have really high demands go for a cheaper one.

Who mentioned 13.3" MacBooks, ah Taisto, yes. Well i had two white macbooks, 1.8ghz and 2.16Ghz (model 2007). Sold older one and bought myself a bit better one. Then sold it too, no particular reason though. Actually the reason was i spend all the time working on a desktop machine so no real need for a laptop. But as i just can't help myself having one i got a sony vaio, but again mainly for my wife, to play age of empires, zoo tycoon and now Sims 3 (heheh i hate all of these 3 ;-)

Now about mobility, 17" vaio, not much of mobility here. This laptop is big, i mean not that heavy but again not that mobile to take it with you to bed for example and use it with ease. When i had 13.3" macbook, i used to take it with me to bed, read mails, surf, always in my arms. It was so easy using that laptop. I said to my self, several times while using it, how great and compact it is. Just a perfect dimension, for regular computer usage of course. So i just loved it. 15.4" should be also fine but definitely nothing above it as you'll have it always on the desk or on the table. Not much of mobility then.

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