Statistics on Machine Models Used in Home Programs

Would anyone happen to know if there is a tally on machine models used in home programs and why particular models were selected? Also, are there any trends in which model home programs are going to currently?

I’ve never heard of anyone collecting this data. It might be interesting to see. I suspect often the choice of a machine for a clinic comes down to what your corporate office tells you you can have based on contracts or cost. From what people on this board say, however, people have been successful in getting clinics to try out different machines.