Ya, I think Mary may have some interference issues as the Harmony one appears to have the same wide array setup as my 676 and I can work my avr that is beside and a little behind me with a bounced signal of the wall in front of me. I do agree the Harmony's are not the fastest at sending a signal but the easy set up is nice.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70