still purely radar based, I would still stick with camera based unit. If the trackman IO is still spendy, at that point if you are going to spend that much I would just get a GC Quad so you could take to the range and course too. If it is solely going to be indoors and want to have lefty and righties playing at the same time, ceiling mount is better like the GCHawk or Uneekor XO or XO2.

Having played sim golf on foresight LMs (GC3, GCquad) and trackman and having had multiple fittings indoors, I prefer foresight LM for indoor use. If is purely an outdoor unit, just would be what I got the best deal on. GC3/GCquad and trackman are kind of king in the accuracy arena for golf launch monitors so both are great.

Don't think you would be disappointed with either