Replace RF-15 with RS-10/RS-42 or keep them?

[klipschbuddha]

Hello, all. I recently purchased a 5.1 setup at what I believe is a good price. Here is my current setup.

Center: RC-25

Fronts: RF-25s

Surrounds: RF-15s

Sub: RW10

I am considering selling my RF-15s and purchasing either the RS-10 or RS-42 to replace them as my surrounds. The current position of my RF-15s is not optimal. I have a long couch table that sits against the back of my couch. The RF-15s are on either side of the table. As a result, the woofers on both speakers are pretty much obstructed by the couch itself. I can either somehow elevate the RF-15s or place the RS-10/RS-42 on the couch table itself. Another consideration is that the RF-15s are 5.25" drivers and the RS-10 & RS-42 are 4.5". Considering that these are surrounds, I don't know how much considering I should give to the woofer size.

Do any of you own the RS-42? What do you think of them?

Any comments or suggestions would be appreciated.