The type of computer that is best for your needs can really only be determined by you. If you are only going to be using your computer for word processing and internet access, then you probably don't need the newest and greatest computer on the market. If you like to play graphic-intensive games, or rely on your computer to run some very intense software, then you might want something more high end. All of the computers in our labs are Dells.
Dells are usually affordable and very reliable computers.
They also allow you to build your own computer and customize it to be perfect for you. Gateway Personal Computers Gateway also offers some very nice, reliable PCs at very affordable prices. They also allow you to customize your PC to your liking.