mppt vs pwm

To me the issue is purely one of finances. Useable amperage versus total cost of the array. If a higher voltage panel with MPPT is cheaper then I'll take that path. If I camp in the middle of a grove of redwoods, ten acres of panels and a controller the size of a washing machine ain't gonna cut it. Neither is assuming the panels are going to do much in Port Alberni or for 6 months at a stretch at the south pole.