Why not check out a site more geared towards that? You can get tons of reviews that are already written and it is more their expertise. I'm not saying that people here don't know about hardware or what to buy... you'll prolly just get better reviews/suggestions at a more proper site.

Like... for instance... http://www.pcworld.com/ has a section called "Product Guides"

Clear, straightforward advice on how to choose the best products and get the best price

• Desktops
• Digital Cameras
• PDAs
• MP3 Players
• Notebooks
• Printers
• Scanners
• Monitors
• CD-RW
• Wireless Phones
• Home Networking
• Graphic Boards
• Hard Drives
• Camcorders
There are plenty more out there... a simple google search will yeild you tons of results.

Oh... if you are planning on building your own... I have found www.pricewatch.com to be a great site for finding what you want for cheap.

What you build depends on what you are going to use it for. Like... if you are going to play tons of games... you will want to look into something more geared towards that... or if you are going to build a server you don't need the high end video card... etc. If you're building a linux box... pick a distro and look at supported hardware... yada yada yada.