I need everything to be set up "activity-based". So I assume I will be able to set up
a custom macro button on the color screen section to, for example, turn on the TV,
preamp & DVR, and take me to the appropriate "page".
With the 810, you first create devices - tv, dvd, reciever. Then you create activity macros using those devices. When you create an activity, you tell the remote which device primarily controls the component - then it jumps to that device.
Then, to turn everything off (regardless of the "activity" I'm in), I would simply hit
the 'Off' button? So in this case, what purpose does the "On" button serve? I'm
assuming (hoping) that I wouldn't need to first push the 'On' button, and then push
the custom "Watch TV" | button?
Yes, you can tell the remote to power down all the equipment by pushing "Off." In the devices, the On button is the power button for the device. In the activities, the On button runs the macro in upper left corner. After selecting an activity, the On button sends the macro again. You do not have to hit the On button before selecting an activity.
I've also considered the MX-980, but frankly I like the layout of the MX-810 a lot
better. I figure I could sell my Pronto with the RF receiver for close to $500, so
either would be in my budget. The one thing I don't like about the 810 is that it
doesn't have a charging cradle? What's up with that? I suppose that's not a deal
breaker for me but it also doesn't make any sense.
The 980 would give you much greater flexibility in programming, but mostly for the more complicated systems. As far as programming, the 7500 is more like the 980. But that may be over-kill for some systems. If you have discretes for all components, either will do the job of running macros to turn on a few components and and set the inputs. If you need to do more complicated macros with variables, etc, then you may look at the 980. But, for a straight-forward 1 room system, the 810 will work great. I have an 810, coupled with an MRF-350, controlling 5 components that is more than adequate.
As for the charging craddle, it hasn't been an issue for me personally. The cord simply plugs into the bottom of the remote. I get around 1 week per charge, so the remote isn't plugged in all that often.