I have a 2014 3950...we full time in ours and have not really experienced anything bad, aside from the normal nit picky crap. The biggest thing with the Voltage line is going to be the slides. Up until 2015, they used the Schwintek slide system. Knock on wood, we have been good, but folks still have problems with them...basically boils down to maintenance... I only operate the slides when level and with the generator or shore power...even though I have two batteries, the motors use a tremendous amount of torque, which requires a lot of power... Hop over to the Dutchmen Owners forum, there is a section for TH...which are 90% Voltages.
Cale