Agreed that online reviews are broken. That's what drove me to co-found a company that takes a different approach to reviews, one which stresses category over individual products.
Start with the premise that the person you most want to give you advice is someone who is passionate about a topic or at least has done a lot research on it. If you ask them for advice, first they'll give you an overview, which hopefully includes what attributes you should be thinking about. Then they'll recommend a small number of models to consider, based on what you seem to be interested in. If you're doing this with other people around, perhaps a few other people will pipe in with suggestions.
So - for example - if you're looking for 3-4 player board games more interesting than Sorry and Monopoly - so interesting that they have a decent chance of getting your friends and/or family members more into gaming - I prepared a guide on our site that does just that:
http://obviously.com/619/gateway-games
(Note: site styling is incomplete - we're not quite ready to launch)
The essential idea is that if you narrow a topic down enough (i.e. 7200 RPM HDDs that are very quiet and can easily survive a several foot drop onto a hard floor), there's probably somebody out there who's taken a great interest in that narrow niche and can write about it very well.
On the other hand, it's hard to write about the too-broad hard drive category as a whole, and it's also difficult to talk about one hard drive with little context.