Dang. I saw your other post and was hoping someone might have ridden both.
But, due to the date of availability coinciding with Winter, most folks who have ridden Rumblefish are Fisher employees, and probably not the same people who would be riding Specialized bikes.
I'm sure that's not the whole story, but there might be some merit to it.
I would gladly go on and on about how much I'm enjoying my Rumblefish, but that still wouldn't be a comparison between the two bikes.
Demo season is coming! You might want to keep that money in a nice, neat pile and wait until YOU can ride both. Then tell us.
Parts Schmarts. I'm hoping you can feel a difference in the handling of the bikes. My RF is very natural feeling and didn't feel "weird" when I first got on it. If that's G2, I'm a fan.
Good luck.
--Greg