To Buy or Not to Buy

Since I'm gonna go to graduate school, I started thinking about the things I need.

1. bag -check-
2. everyday budget -check-
3. handy laptop - ...

So I'm stuck on the third. Actually I have one; a compaq presario V6000.

Mine's running Ubuntu OS. The original Vista OS got wiped out along with the rest of my files because the hard drive crashed.
I'm generally happy with my lappie because it has all the essentials. It has office programs, firefox, video editing programs etc. The wide screen display is a beauty too, and I really love watching movies here.
But the only thing that makes me think of getting a new one is portability. My compaq's a heavyweight. It weighs around 3 kgs so I hardly bring it around. I keep it in a bulky laptop bag and stuff the charger and mouse along so, its quite a huge package. I also think I need a lappie that has...

• long battery life
• ease of typing
• high quality display
• standard screen size (doesn't make me squint)

I have a tendency to mull over things when it comes to high-purchases. A gadget such as a laptop might cost a fortune. I did some research in the web and my options are:

1. Asus net book
2. Vaio M
3. Mac

Sorry not a net book cause I can't stand working on a small screen. Vaio M's cute but it's pricey, has small screen size, and some say it's not that durable. The last option, the Macbook, appears to be the best laptop in town. It has complete features, long lasting battery life, handy, chic, and to top it all, it's very expensive! (but worth it i suppose)

I have a tight budget because I'm really serious about saving up. I feel like buying it but I just can't. I'm afraid I'm gonna lose my hard earned money... I bloody worked hard for it. Oh I'm so torn.

How 'bout you? What do you think?