Currently, I still prefer the PS/2 boards. I have a couple of issues with the PS/3 boards.
- There is basically nothing field repairable on a PS/3 board set, many repairs are possible on the 3V PS/2 boards. Most of the 3V boards I get that are dead can be repaired for far less than a new board.
- They cost more than the PS/2 boards.
- Given my admittedly small sample, they don't seem as robust as the PS/2 boards. I've had several dead ones already out of less than a dozen total that I've seen. Of course, it's a total loss when they die.
- For existing locomotives, there is very little new stuff you get with the PS/3 boards in an upgrade.
For new products, there is great potential for PS/3 to add features and to allow smaller DCS equipped products, but that's still an unrealized dream. 
