I had two different RV's with V-10 engines. Both were 2000 yr models. Best gas RV engine out there. Put about 65,000 miles on these without any issues. Both were nearing the 100,000 mile mark when I sold them
I have a son who is in the automotive repair service business. He takes care of a number of fleet vehicles with V-10 engines. Plug blowing out problem is far and few between. Usually it happens when people change plugs and do not properly torque the plug.
When one does blow out it is a simple process to fix. He would hilo coil the plug. He never had one come back after doing this process. Kit is available at NAPA.