The "analog issue" has been around since the advent of "2nd zone".
All it means is your SOURCE has to be connected analog RCA(the "old" red/white). Now if your source is a BD player, then you need to double up the connection. Same with your HD Cable/Sat box for the "radio" stations.
The snafu with that is, you have to pick ANOTHER input(on most receivers) than the one it is originally on.
Meaning...if your BD player is HDMI in to "dvd" than you can't connect RCA to "dvd" as well, pick VCR or CD. Same thing goes for the HD box.
The "lowest price" receivers that can take digital input and exit via the "other zones" are the Denon AVR 4311(could be the 3311???) and the Yamaha RX-A2000(again, could be the 1000...been a seriously long while since I looked, but you can gauge the type of receiver to do "digital multi-zone" by the price of the A2000/AVR4311).
Now about your "speaker A/B". Yamaha allows the 6/7 channel to be done 5 different ways...(there are more than just Yamaha)
So, with most AVR(and depending on how much you are "willing to spend") you can have both "speaker B" and "Zone 2", whichever way you want to do it. And "change it" on the fly.
Also...this "zone 2" analog requirement...
On some receivers...if the receiver is providing power...there is no "digital restraint" like there would be if you were using the pre-out.
Again, pick your "price point" and how you want to do it(pre-out or powered) then find the receiver that fits what you are willing to spend.
At your budget(whatever it is) I am sure H-K/Pioneer/Elite/Onkyo/Integra/Sony/Yamaha/NAD/Denon/Marantz/Sherwood Newcastle, one of them makes a "powered zone 2, non digital restrained receiver" for less money than everybody else.