@AustinBill, that is great information and I think it is totally on point. While this thread started as a 3 to 2 rail conversation, the performance of the PS3 is a key component of that. The main reason I am looking as these Protoscale 3-2 and Protosound 3 engines is because they can be 2 railed and run on either DCC or DC for my home and club.
Great experiement, thanks for trying that out. I think the combined flexibility built in to these engines in Protoscale and Protosound systems is a key selling point and makes them adaptable to many different situations, without "open heart surgery" if you will.