Thank you Korgasm. You are 100% right about the polyphony issue. The deal is however, that you could be fine if you limit your tone switches to two per patch in each performance to get a respectable amount of polyphony in the JV/XP.
On some sounds, the 4 tones being on is essential. For some others, four tone switches on is a waste. More like a show off of factory synth programming. Remember this when you use an external module too. When doing that, turn off three of the four tone switches in a patch on the MIDI channel you are using with the external module to get more polyphony.
You'd be surprised to see how many of the XVs waveforms are from past Roland module. The SRX is what makes the XVs appealing. Remember, a fully expanded XP/Super JV still has much more wave memory than a XV with one SRJV expansion board. Also, just because you have more wave memory doesn't necessarily mean that you'll have better sounds. Sometimes, it just means that you have more sounds.
With all of that said, the XV is not that bad of a value, considering that the XV3080 goes for $1299 brand new. That's a couple of hundred dollard less than what the JV1080 was going for upon its debut.
The Infamous EPU.