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. It has a triangle shaped tip so it can get in to places other sanders can t reach. Sanders result in a great deal of dust particles remaining. Make sure you wear eye protection. A respirator is recommended as well to prevent you from inhaling the dust. This is especially important if you are working at an angle where the dust is coming directly down on you, such as overhead sanding. If you are willing to learn to operate specific power tools that is one thing, but if you feeling pressured to do so you are going to have too much anxiety to operate it. Using power tools safely and under the right conditions will help reduce the possibility of any injuries occurring. They are a great way to get your projects and hobbies underway, but never forget the actual power behind them. This is because you will want to use it for different length of nails. It will also help you get the nails sunk in even with the surface of the project or even countersink them. Since the reasoning behind purchasing a power nailer is to give you the ability to put in large quantities of nails in a short amount of time, it should be easier to control. There are many different shapes and sizes of sanders to choose from. The are relatively inexpensive. You will need sandpaper or sanding discs for them. The sandpaper comes in different grades from very coarse to very fine. A cordless screwdriver is a very simple power tool, but one many of us love using. The fewer teeth, the more rugged the cut it going to be. Combination blades with many teeth will give you the cleanest cut. There are specialty blades available as well. Refer to the manual that came with your power tool to find out if a specialty blade is recommended. The right power tool combined with the right accessory is going to make any type of project go smoother as well as affect the quality of the outcome.