You're kidding. We have no more idea how the next 5-10 years are going to pan out than the Met Office can predict a barbecue summer. The only thing I'd suggest is to wait until next spring before committing, since there are more rabbits to pop out before long. Then make your own mind up on which system to blow all that money on. You're going to use it (presumably) so it has to suit
your preferences, not those of whichever system's fanboys.
Video might be really important to you - doesn't matter two straws to me - or you might be printing really huge photos on to gallery paper, or posting gazillions of aurora photos on social media. Perhaps you specialise in 100-frame focus stacked macro/micro photography of local pond life or it might be street photography of the other, er, local pondlife. You don't mention what you're going to be doing with the new gear, so how could anyone advise?
Last edited by StiffLegged; 10-14-2018 at 11:18 AM.