I got my multi on the Seneca and all I can say is that I'm glad to see the back of that one. This is my most personal view and not based on much experience in them, so forgive me Pace. But to me they were impossible to get into and out of, had a fuel system from hell, the manual johnson flap bar always made you jerk the plane when deploying, cramped, ultra high glareshield that obstructed the view, finicky cowl flap management etc. I'll give them that they did land nicely and the gear felt sturdy and they performed OK, but that's about it. Each to their own.
P Baron has a life limit on the airframe and main spar, so that's something to consider. In many ways I think all planes should have that in principle, but when you're shelling out so much money for a piece of equipment, then the economics of it can become a problem.