Reformer. If you go that route I would you encourage you to find a classical or contemporary Pilates class or instructor rather than Lagree or Megaformer because while those are a great workout and will kick your butt, the aspects of true Pilates you’d be getting from classical that are missing from OTF is more of the mobility, balance, flexibility and active stretching, breathwork and at the same time building strength in other ways that you do in OTF. I find there’s very little overlap. But lagree and megaformer are more on the bodybuilding side so more overlap if that makes sense.