[Klipsch rp towers to go with rp-150m’s?]

I’m wondering which RP line of towers would specifically have the most timbre match with my RP-150ms that I’m running as surrounds? Currently for fronts I have the r-610fs which surprisingly sounded the most timbre-matched with the 150m’s than the 600m’s which I ended up gifting to my brother.

The 600m’s had a significant amount of upper bass which made male voices sound deep, which isn’t bad at all (great for dialogue) but I prefer less upper bass for music, more of the beautiful upper midrange that Klipsch is known to bring out with female vocals as an example. Both the r-610f’s and the rp-150m’s sounded absolutely incredible and similar in that regard.
 

I can also tell there’s more free treble detail inherent with the rp’s, and the bass also sounds more “accurate” to me. Which rp tower has this without the exemplified upper bass that the 600m has? Thank you.

[R-121sw vs R-112sw?]

How does the r-121sw fare against the r-112sw? Has anyone had both and would like to share their thoughts?

[Reference vs reference premiere?]

So I found some deals on both the r and rp series speakers for fronts and surrounds in a 4.4.2 setup:

 

r-610f pair: $175

r-41m pair: $100 

$275 total

 

rp-600m pair: $250

rp-150m pair: $210

$460 total

 

Is the rp really worth the extra?

[Onkyo vs Yamaha]

Has anyone had Yamaha and Onkyo receivers with Klipsch speakers and would like to give their input on the tonal differences?