Before you do, listen to this very helpful podcast:
TMUP Live 72: I want a new Mac, now what?
Mac Rumors Guide site will tell you if it's a good time , historically, to buy the model Mac that you want. How many times have you bought a computer and had the newer faster version come out 2 weeks later for the same price or less? This site will help you avoid having that happen:
http://guides.macrumors.com/Buyer%27s_Guide_%28time-ordered%29
Right now(4/09/08) they are advising people to wait before buying new LCDs or iMacs because there will be updates soon. Of course they aren't always right. ***** But they were right this time...see mac news page about iMac updates!
Here's a great new site for new Mac owners:
Fun link for cat lovers: www.bluberrycats.com