I personally like SFOT a LOT and have somehow wound up there 7 out of the last 10 years!
As far as the coasters go, IMO there is nothing really THAT special about them, other than Shock Wave and Freeze, but it's a GOOD selection and the park is just a nice place to visit.
Here's my take on the coasters:
Freeze - My favorite coaster in the park, GREAT ride!
Shock Wave - ALSO my favorite coaster in the park!
Batman - It's a Batman, which means it's also a GREAT ride.
TX Giant - I used to really, REALLY like this ride a lot, but it's dropped for me over the years. I think the only seat I can ride it in anymore is the very front.
Judge Roy Scream - Fun little woodie. I actually like it better than the Giant now.
Runaway Mountain - One of the better "in the dark" coasters. I won't wait in line for it, though.
Mine trains - Both of them fairly 'average'
Titan - Meh...it's like Goliath with more helix and brakes. Not a bad coaster, but nothing that great either.
La Vibrator - I've always liked the Intamin bobsleds, so this is fun, I also won't wait in a line for it, though.
Flashback - It's a Boomerang...and one of the rougher ones. =(
I like the fact that they have Parachutes there, Superman, a dark ride, and a tower that is actually OPEN!
It's certainly a MUCH better selection than SFMM, IMO. And they have Qbot there, which is awesome! So yeah, I really like SFOT, and quite honestly I like the other two TX Six Flags parks too....yes, even Astroworld!