I've been looking for a good receiver and i finally decided to get either a avr 430 or 630. I've been searching for cheap prices and have seen many refurbished H/K units on the market and have been worried about their reliability. I want to get a good receiver that lasts a long time because i don't intend to change it. I would like to hear from you guys about H/K reliability. Also which recivers are most reliable?