I recently installed the PI 50amp hard wired unit with remote display in our new 5th wheel. I went with the PI model over the SurgeGuard based solely off extensive researches and reviews. Both are good and capable units. But the customer service with PI is stellar to say the least. They stand behind there products and have 24/7-365 customer service dept. You will be extremely hard pressed to find a negative review involving PI. Unfortunately this isn't always the case with the other brand. That was enough for me.