MPC was the best thing to happen to the hobby in the early modern era. Good looking, affordable and dependable.
I run Prewar, Postwar, MPC, some Williams and some early MTH Railking. I can do nearly all my own repairs on them. With Williams and MTH, I've had the electronic eunits fry, but they've been easily replaced with rectifiers and mechanical eunits.
No $$$$ paperweights on my layout.