I goto several sites. I used to goto even more. Here are some I like:
Ace's Hardware - His reviews are less frequent, but more thorough than many review sites.
Firingsquad - Very knowledgable in the graphics arena.
HardOCP - I don't like the site much in and of itself, but he offers A LOT of links to reviews that come out on the web outside of his own site.
Sharky Extreme - There isn't much to separate this site from Tom and Anand, but it is worth looking at.
Ars Technica - Articles that get down to the real nitty gritty of computers, plus cool technology/science links all the time in the new.
There are also sites that are focused on more specific areas of the hardware world:
Rage3D - The place to go for information and help with ATi video cards.
Storage Review - All the information you could ask for about various storage mediums, particularly HDDs.
AMDMB - A lot of good information for AMD CPU users.
I hope some of these sites can help you make good decisions. When you put together the final system in your head, post it on these forums. We'll be glad to fine tune your selections for you and offer alternatives.