2008 til early 2015 - Not too shabby for a refub. I got my 805 new in Dec 2007 for $700. Still going strong and no plans to replace it, unless it would crap inevitably crap-out.
Only then I expect to replace it with nice Mid-range denon
Unfortunately while back in 05 series Onkyo was the underdog - pulling all stops trying to get top end features for reasonable dollar. Sadly not anymore. I look at their product line and it looks like they have given up. I hope some at Onkyo will read these lines. I'd love to replace my 805 with new Onkyo, but sadly Denon beats then hands down in every single category