In my opinion, most "objective" reviews of cameras (e.g., dpreview's) border on completely useless. The problem is pretty simple: they basically have a generic review where they fill in the blanks. This mostly tells you a lot about how cameras are alike, not about the differences that really matter. Knowing that camera N has 12.67% less noise at ISO 25,600 than camera C will almost never mean anything to most photographers.
At the same time, they rarely devote more than sentence or two (and often even less than that) to features that really matter. Just for a couple of examples: the liveview on Sony's cameras is a lot different from that on any other brand -- but most reviews (at most) have a half-sentence mentioning something like "...with a somewhat unusual take on liveview..." Likewise, Pentax has a feature that can sound a lot like program shift when it's first described -- and in a lot of reviews it'll be described about the same way: "...an unusual version of program shift..." In reality, it's not program shift at all, and it can make a substantial difference in how you're likely to take (some types of) pictures -- but most reviews seem to have been written by people who've never even figured out what it really is, not to mention why it matters, when you'd be likely to use it, etc.
A couple of people have mentioned Ken Rockwell as an alternative. In my opinion, he's almost the worst example of an alternative possible. In particular, he seems to routinely write things that even he undoubtedly knows are complete nonsense, simply because doing so is almost certain to attract page hits. While he has some good material, it's mixed about equally with stuff varying from nonsense to sheer lunacy.
Michael Reichmann at Luminous Landscape writes from a fairly similar viewpoint, but without the lunacy factor. Thom Hogan is devoted almost exclusively to Nikon equipment, but does quite a decent job of reviewing what they produce (and unlike some brand-specific reviewers, he's quite open about it when he doesn't think very highly of a particular product). While he's devoted to a different brand (Sony), David Kilpatrick at Photoclub Alpha does pretty much the same, taking some time to get to really know a product and then writing a review -- and doesn't seem to pull punches about definite or potential shortcomings, mistakes, etc. Unfortunately, I don't know of a Canon-specific site about which I can honestly say the same. Rather the contrary, every Canon-specific site of which I'm aware looks like they're basically just publishing Canon press releases. With some luck, that's just a matter of my ignorance though, and there are really some good ones out there.