It may list for $1400 more than that sale price, but you can probably buy it from your home theater store for 20% off that 3500, or $2800ish.
Considering the 5805 is much beefier than the 5803, im inclined to believe the 4806 is probably similar, or closer to the 5803 (if not better), than the 3805, plus you really cant go wrong with the HDMI upconversion.