I think you nailed it.

Gem is the more satisfying shot when you make it cleanly on purpose but Quorra is the better game play shot as it preps you for Quorra MB, increases timers in some modes, sets up the ramp shot and also set's up a Gem shot.

I don't know about shots but I voted for my favorite....

I would be satisfied with either

Gem is just a cool shot. I love that you can plunge it if you get it just right.

I like to run the Gauntlet. Visit Quorra on my way to Gem. Combo is the only way to go!

Man I'm a crappy player (still) but I can reliably hit Quorra. That said, I enjoy when I aim for it and nail it. The Gem shot it 75% made accidentally so I don't get satisfaction. Just surprise.

Both are satisfying shots, and functionality-wise Quorra is much more useful, however I had to vote for Gem because nailing it straight on is by far the most satisfying shot in pinball to me.

I voted Quorra as the Gem shot is too much of a fluke and too hard to be able to hit reliably on any sort of a consistent basis.
Yes, Gem may be more satisfying but Quorra has its own form of uniqueness and triggers an awesome multi-ball whereas Gem gives a pretty weak jackpot award. In short, Quorra all day. In fact, Gem is so frustrating for some, one pinsider described drilling out the ramp so he could move the E in the ZEUS targets out of the way so he could hit Gem more reliably - any shot that generates such disdain is either AWESOME -or- AWFUL - you decide for yourself...

They make an excellent combo and I love them both, however, my avatar indicates where my heart lies. Since I can't have PattyJ I guess I will "settle" for Gem.

What? Where did that come from? I'm pretty sure that's NOT the case, and the only thing that might increase a mode timer is the mystery award at the scoop.

I can't recall which all ones it increase but I'm 99% that it increases the timer while in the Chase Gem mode. I use it as a combo shot to keep from running out of time while in that mode and to give myself a better chance at hitting the shot vs trying to craze it off a post or shoot the rebound shot off the Tron targets (pro only).