My system consists of:
Speaker / Listening distance
RF-83's / 14'
RF-62 / 13'
RS-42's / 5-6'
I am very satisfied with the RS-42's they carry their share of the load very well and at times still surprise me with just how robust their sound is.
I do not think the RS-42's will disappoint.
Now, having said that I do think each step up sounds better.
Lots of factors come into play when selecting speakers though; price, size, aesthetics....
In my case the surround speakers needed to wall mount and one had to fit above a door on one side of the room, being a living room my seating area is spread out so being able to position the speakers so the drivers pointed at different seats was also a plus.