This is going to be my first Home Theather setup and those are the two receiver s i have come to like. My question is which one should i get. Right now i am debating on wether to buy them refurbished or to purchase them retail. 2 YR warranty on retail and 90 days on refurb. Have any of you had to use their warranty on receivers? the 2105 goes for 650 Retail and hte refurb goes for 350 (US prices) the 2805 goes for 900 retail and the refurb goes for 550 (also US prices) Is the 2805 worth the extra 200 odd dollars to get?