Quoted from solid_snake:

As with a lot of Borg games the Premium isn't a huge upgrade. The turtle van multiball and Krang toy are nice to have though. The glider diverter and pizza disc spinning in both directions aren't a big addition for me, but for some they might be (especially the glider). Also, 8 balls on the Premium compared to 6 on the Pro, which is pretty rare.

Quoted from Thunderbird:

Pro is nice too, but Premium all day long. Have shot both, but don’t kid yourself, the upgrades are not small.
1. Being able to change lanes via the glider is huge, at least for me. On the pro, always frustrating can’t do that on a tougher playing layout. Layout was meant to have the glider.
2. Ball lock in the Lair is also a game changer. pro doesn’t have that.
3. Krang toy puts you in the Zone and is such a fun addition. Can’t imagine the game without it.
4. TMNT van having 4 balls falling out of the van is just like the Ninjas all falling out to kick some Foot.
5. 8 ball vs. 6 ball, so much more fun, with all the kaos like 4 clan vs 4 turtles. Easier to hit all the required April shots with 8 balls to get to Cowabunga. (Even with that, I’ve not been there yet, lol.)
6. Both direction spinning disc really adds unique play to the game and is utilized not just during PMB, but during regular game play, which keeps the ball from going SDTM.
Think you’ll be happier in the long run with the premium all day long, imo. The differences are so many, they all add up pretty quickly to a better package, which is the way Borg fully designed the game to be at its best. But the pro is a great value, which you already know.
Tell us which way you go.

Quoted from Dustwel:

I have premium and have only played Premium and CE. I can’t imagine playing without the ramp diverter, and Krang and van ball drop are awesome too. The ramp diverter especially comes in useful. A ton of shots need to be made off of the right flipper and it’s not easy to pass between flippers when held.
Just got JJP GNR last week and honestly still love TMNT Prem more.