Cheers for the prompt.
Yes, I’d say it’s def worth it, having had both. The 600 has more eq options, has more power, and just has a better overall sound to me. Re the power, although it’s only a difference of 100 watts it feels like much more to me, and the weight/heft to the sound just has a better feel to it. I’m no longer in a gigging band (and no intention on being in one anytime soon) so am selling mine, but if I were still gigging it would be going nowhere.