If the tool feels heavy, imagine how much more so it is going to get when you have been operating it for several minutes? Some of the smaller hand tools are designed to get into very small spaces, but if you have large hands it may not work well for you. Don t forget the population that is left handed. You really don t know the effect that is going to have on the operating capacity of the power tool. It is never a good idea to operate any type of power tool if you have been consuming alcohol. Your perception will be off and you could end up with a very serious injury. Some prescription medications and over the counter medications can made you groggy or sleepy as a side effect. To make that decision, decide what you are looking for in a power tool. Where are you likely to use it? Is there a reliable power source in that location? How much power are you looking for? If it doesn t matter than make the purchase based on the best price for the power tool you are looking for. You can easily compare the differences between a particular power tool model with a cord and without. The reviews on routers are fairly divided. If you know how to use one properly then you absolutely love it. If you are intimidated by it, then you feel like it is the one power tool you can do without. Sanders are very basic power tools, but they can significantly reduce the amount of time it takes you to complete a project. Make sure you change the sandpaper or disc often to get the best results and further reduce the amount of time the sanding project takes you. For most jobs, you can sand with and against the grain. Don t put too much pressure on the sander as you use it. This will only hinder its performance. Keep a firm grip on it but the sanders should be able to move freely. Since power nailers are often used for roofing and other construction work, you might consider getting a cordless model. They often are just as powerful as the models that operate on compressed air. They come with very effective batteries that are long lasting. Some operate with a compressed gas in a canister.