Running both here and I must say that TEW-691GR is performing very well as DHCP and PAPNs. Like the ESR-9850 it also has Hardware NAT. Also has and hardware frame aggregation to speed packets to their destination. I ran some test on LAN to LAN sending a GiG over the network with it. The results show it's only 18mbps less than what I had got with the ESR-9850 doing the same test. Peer-to-Peer is really quick and stable on the TEW-691GR. I am testing wireless from 3x 4dBi (12dBi) I also replaced the TEW-673GRU 2x 3dBi with 2x TP-LINK 5dBi (10dBi) much improvement about 20% increase in signal ratio as SAPNs
Full review here
Full review here