Considering that you're getting a full warranty and coming straight from HK, I'd have no qualms. Although you can never predict the future, whatever problems the equipment had should have been resolved with either replacement or repair of the parts involved. At least that's my rationale. Others may have a different point of view, though.
manufactured refurbished
What are your thoughts on Manufactured Refurbished products? In question is a Harman Kardon hk990 int. on Ebay for $990. This is straight from the manufacturer with full warranty. I've been looking at this product for awhile and am highly interested at this price point but a little nervous about spending money on a product that may have recurring problems.