This is a review and detailed comparison of Onkyo TX-RZ710 vs Onkyo TX-NR828. Both have 7.2 channel amplifiers. Only the TX-RZ710 has a Dolby Atmos support. DTS:X is supported only by the TX-RZ710. Based on our rating, AV receivers have the same overall rating of 7.5.
The Onkyo TX-RZ710 is better receiver in this comparison - check Onkyo TX-RZ710 price.