I'm really interested in purchasing a "refurbished" Onkyo tx-sr701. Once it says it's "refurbished" does it mean it has a shorter lifespan compared to the ones that are being sold at the current market rate? It has a one year warranty though. According to the seller it hasn't been used. I'm like a rookie and I really need your suggestions. Have you purchased some refurbished electrical equipment? Did it last long? Should I go for it or settle for the cheaper 601s?