For myself I like user made reviews. I read through a bunch but I do follow some guidelines.
- Ignore all professional reviews (too corrupt)
- Read the lowest scores 1st to get an idea what might be wrong with the game
- Ignore any perfect or almost perfect scores (10's & 9.5's)
- Ignore anything less than 500 words long (4-5 long paragraphs) or is made up of gibberish filler words
- Once I find an approriate review, I view the reviewers history to see if their opinions match my own regarding past games I have played.
The more a reviewer has in common with me, the more weight I place in their review be it good or bad. I generally look for at least 3 or so solid reviews and decide from there.
This system has never failed me.