So if you use the R610 with the satellite it'll have the range of a "full range" rx like the AR600?
the range isn't just the receivers responsibility, actually, the maximum range is usually limited by the transmitter. you can imagine the transmitter shouting what you want to do, and the transmitter is doing the listening. when you add a satellite you can say you ad another ear, suddenly you have ears facing in many more directions, so when you are far away, and you start turning, the receiver keeps hearing the commands. so you do gain "usable" range if you ad satellites. (when i say usable range, i mean range where you don't get glitches).
So in theory, you should be able to get the same range with the orange receiver as with the spectrum receivers. however i can imagine that the orange receivers aren't that well built, they may be emitting more (electromagnetic)noise than the spectrum ones, and that again will give you reduced range.
Note: i have never measured anything, so it might be that the orange receivers don't emit noise, and than they can be equally good.