In all honesty, I must admit that the OB6 is expensive for what it does. Even if I love it.
But if one already has a REV2-16, with its modulation matrix and four LFOs, isn't getting a P12 a bit like getting more of the same ? More oscillators, more waveforms, more modulation possibilities, more controllers, same Curtis filters.
Moreover, Duggie, the O.P., wrote that he "fell in love with the OB6 sound". What more could you ask for ? lol
And, BTW, my REV2 is nice, but it cannot sound as lush as the OB6, even if you try very hard. But it can certainly make weird noises, bleeps and blops galore ! But music ? Well, that too certainly, but not quite as nicely as the OB6. I've never experienced that "instant gratification" with the REV2 that I get with the OB6 each time I play it so far...
But that's just me. I'm also guilty of having fallen in love with the Oberheim sound. That dates back to my youth, in the seventies and eighties. Yet, nothing beats my Minimoog D though. But that's another story.