Nothing is worse than buying a new piece of technology for it to be obsolete the next week. If you stay up on your gadget-gossip then normally you know what is and what isn’t going to becoming out soon, but sometimes its hard to track it all. With Apple it is easy, they normally release their products on one of their big days each year so predicting when new stuff will come out isn’t impossible… but mac rumors makes it even easier.
Their buyer’s guide analyzes each product line, when the last update was, the life cycle for a normal product and then tells you a recommendation on if you should buy or not . So if you are going after a new mac pro or sexy 30 inch cinema why don’t you sit back a little bit and wait it out. (Personal tip : as soon as these new products come out the old stuff doesn’t disappear, its either in clearance or the refurb section at what could be a heavily marked down price… if you are ok with slightly-less-than-cutting-edge technology.)