Have used the Dolphin software for some 6 months now, and I have made the decision, that I'll be better off with Joomla. I see Dolphin as a software having great potential - when it is finished. I have had so many bugs and errors, even in the extension that I bought(which is still not completely functional), that it is still useless, for my purpose at least.
But good wind with the future development. Maybe one day, when it is fully developed, I'll re-consider it.
