The T Hanger design is only offered in the smallest & largest sizes, and each is based an a different stage from Indy’s past.
Years of evolution in both skating & technology have yielded the current iteration.
Many Indy devotees consider the Stage 11 to be the pinnacle of their design development.
If you’ve made up your mind that is is to be Indy, you need but choose the size appropriate for your preferred deck width, and perhaps additionally decide if you’d prefer a lower height, and some extra bells & whistles in the form of weight savings.
My 2 cents: go with the standard issue, plain-jane version: they’re a smidge heavier, but are a solid truck at that price point that won’t likely let you down.
If you ride a hog, those 215s are really fun.
Maybe consider Ace as well.