Must Try Irons During Fitting?

I will be going for an iron fitting later this week and I wanted to hear what everyone's must try irons would be. I am not biased toward any brand, I just want to try irons that you individually think perform the best.

For context, I was fit 4 years ago but my game/swing has changed dramatically since then. I currently game Titleist T100 with Project X 6.0 shafts. I am looking to stay in that players iron category but am open to suggestions. I am looking at Srixon ZX7's, the new T100 model and Taylormade P7CB. Are there any irons missing from that list that you think I should try?