I used a Kay RPC for years and it was fine but the swap to a PP was a real upgrade. Legs are balanced within 2% or less which is way better than an rpc. Virtually no noise other than a little sizzle. A 10 hp PP will start a higher hp motor than a similar sized rpc. Similar to a RPC, you don't want to run the manufactured leg through the controls. A PP is a delta output so the mfg leg measures 208 to ground. Dave