Current Amazon price:
Onkyo TX-NR905 THX Ultra2 - $1,990.12 w/ Free Shipping
Onkyo TX-SR875 THX Ultra2 - $989.97 w/ Free Shipping
Onkyo TX-SR805 THX Ultra2 - $762.48 w/ Free Shipping ($679.98 w/ FS for Silver Model)
Onkyo TX-SR705 THX Select2 - $599.98 w/ Free Shipping
Onkyo TX-SR605 - $379.98 w/ Free Shipping ($339.98 w/ FS for Silver Model)
I think Amazon is letting the 805 hover higher than it should be in relation to the others. Several days ago it was $649.98 w/ FS. The 875 is at a new low price, it hovered around $1,200 before today.