I hate the lone C90 in my Nomad combo. Just don't like the sound. Little to flat and slightly buzzy. I have a 212 oversized recto cab and a 412 traditional recto cab, both loaded with V30s and they sounded so much better with the Nomad. Then I got a Road King 412. 2 V30s with a closed back, 2 C90s with an open back. This cabinet kills the others. The combination of C90s and V30s is perfect. I had always uplugged the C90 in my Nomad when I used the external speakers, so I hooked up the Nomad with the 212, leaving the internal C90 hooked up (though moved to 4ohm load, with the 212 in the other 4ohm load) and though not as nice as the road king cab, it was a lot nicer than the 212 by itself. If I had to pick just one, I'd go V30 since I think it does sound better by itself, with a fuller sound. But if you have the option, the mix of speakers seems to bring out all the good characteristics of both and really fills out the sound.