I think SFGAm would be the most cost effective trip. Next year there will be 12 coasters that you haven't ridden, including two new ones. But this is real tough choice seeing as all parks have spectacular rides. And according to your track record, you haven't been to either of the parks. MF is my #1, RB is my #3. SFO has some REALLY great coasters in Batman Knight Flight, Villain, SUE, Big Dipper and now X Flight.
I think I'll tally the totals now: "Spectacular Coasters/Rides"
SFGAm
Raging Bull
[Intamin Impulse]
Batman The Ride
Iron Wolf
Viper
[SuperInvertigo]
Giant Drop
Cedar Point
Millennium Force
Raptor
Magnum XL-200
Mantis
Gemini
Power Tower Up
Power Tower Down
SixFlags Ohio
Batman Knight Flight
Villain
Superman Ultimate Escape
Big Dipper
X Flight
So as you can see, you won't go wrong anywhere. It's just SFGAm is a lot of saved time with driving. And overall, SFGAm is much better run than SFO, but not QUITE as well at CP.
So my official stance is go to SFGAm and catch a Cubs game at Wrigley!
Have fun, and maybe I'll see ya up on Bull this year!
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In the future, packages will be sent to distant worlds by BEAMS OF LIGHT! - Space Mountain WDW exit