Since I have been here many times (It's my home park), I have quite an edge when it comes to reviewing this. This is my completely honest and unbiased review.
The food here at SFGAd... Well, it's nothing special. Just your typical amusement park food. But it is tasty, though. 7/10.
Most of the roller coasters here are unique. You have El Toro, which is fantastic, Kingda Ka, which is the world's tallest roller coaster, a good hyper and floorless, and two B&M clones. However, Green Lantern, which is a standup coaster, isn't all that great except in the front row. When I rode this, my family jewels got obliterated. 8/10.
The operations aren't all that great. Not really SFAm bad, but not Cedar Point or Europa Park good either. Somewhere in between. I think it took about three minutes to dispatch Bizzaro when I rode it, and stacking did occur while I was on the ride. 6/10.
There are plenty of family rides here, as long as many thrill rides as well, making it a great family park. The locations of all of the rides are good, except for Bizzaro, where you have to walk through Bugs Bunny National Park to get to it. 9/10.
The prices are sort of highway robbery, though. It is $67.99 each for tickets, season passes are $79.99 each, gold passes are $194.99 each, and flash passes are $44.99 each. 5/10. (As pointed out by dcs221, tickets and season passes are cheaper at the beginning of the season as opposed to the middle or the end of it)
Overall score: 35/50. To be honest, SFGAd is a huge park, the largest in the world actually, and in my opinion, it was quite disappointing to come back and see it really wasn't as fun as I remember, and that was in 2006. (I was seven years old at the time) Nevertheless, it's still a very fun park to go to, and that is why it's considered the best Six Flags park in the chain.