Undoubtly, there is a increasing number of technological devices have been invented to meet people's needs with the deveiopment of technology.Therefore, many people like to buy these devices as soon as as they are available. In contrast, someone believe it's better to buy it latter. Form the view poinr of mine, I believe it would be more enjoyable buy it until many people have owned it.To begin with, it is economical to buy it until many people owning it. As we all known that, it is considerablely expensive to buy a technological devices when it starts to be sold since this is  the best time for the company to make money.  However, when many people have purchased this device, its price must be cut off a lot. Take iphone for example, when I graduated from high school, my faher bought me a iphone 4 at the price of 4000 yuan. This was a big deal for my family. But after 2 months later, it was sold at about 2000 yuan, half price as before. That  means, I spent extra 2000 yuan to buy a totally same technological device. Actually, I could by two ipones if I just wait for two month. In addition, when we choose these technological devices, most of us have no idea which should we buy and what we do is just to believe its advertiment. According to the research on the Internet, 78% of people can not distinguish true and false information in the adversting. But when we wait for a while, after many peole buying it and using it, they can tell us function of the product and whether this produxt deserve its price. Then we can collect efficient information about the product and decide which to buy. When the first mircowave came to the market, people were crazy about it.  But its function were not so perfected, people who bought it felt depresssed about it since it was not so marvel as the salesman said. However, we do not deny that the benefits of buying technological devies when it comes to available. You can enjoy the convience and entertainment as soon as possible. Furthermore, these devices ungrade remarkably fast. When you buy it several months later, maybe the nect generation will be invented. As result, you can never use a new type.Though we can enjoy the pleasure of the new type. the advantages of buying it later seems outweigh the advantages of buying it as soon as possible, Not only can we buy devices at a lower price, but also we can choose the best one instead of regreting.