I don't think C-Band will be going away anytime soon.

Most analog receivers can be had for a song (or less if you sing as bad as me

)
Just my opinion, not sure if I'd spend the cash on the HDD200. The 4D receivers are great for the subscription channels.
Someone correct me if I'm wrong, but I don't think the 410 includes dish mover capability where the 920 & 922 will.
You can get the 922 for the subs and moving the dish and slave a HD FTA receiver to that for everything else. That's the route I would take with a single dish.