In my experience the R8B's sync detector is a definite step up from
that of the 7030+, even though the latter is very good. I think the
R8B's sync detector is probably the best one available in a consumer
grade receiver. Others may see it differently, but there's my two
cents. I do like the way you have both automatic and manual settings
for the sync on the 7030+, and it's neat to watch the receiver retune
itself with the sync detector auto mode. Still, if we're only talking
about the ability to make weak, messy signals intelligible, the R8B
wins.

Steve