I was out hanging out with brothers Neu this afternoon and from what I saw there wasn't one more than the other in all processes of completion
But what Eltruchador and Fishnlab said, exactly how I use them also. But...I have used the II many times with plastics, I use 1/16oz heads and it preforms great with the light head. I have also used the TWI for bigger tops and lures. I used the TWI in the surf this weekend and threw 51mr mirrolures with it, it loads up and lets them fly wonderfully. So now that I confused everything, what ElTruch said. If you are a plastics, the majority of the time, guy then the TWI. If you like the bigger tops and heavier lures most of the time go with the TWII. Also if you do use live bait some, the TWII has more backbone for throwing corks.
Either way you won't be disappointed. If you want to hear it from the horses mouth call out to the shop tomorrow morning early(Danny is heading south in the morning) if you want to talk to Danny, if not Jeff should be there to answer your questions. Either one of the guys can help you make your decision and you can place your order directly with them, And really in the long run you will probably order another one, so the real question is which one do you want first? lol