there's aleady a hands-on
i think it's very impressive
you'd only get a solo for the multi-point cable cam or if you're banking on the accessory bay upgrades...or customer service. or looks (but personally find a black quad harder to locate in the sky vs a white one)
Otherwise it murders Solo's "smart drone" mantra in terms of features and polish. Which is to be expected...I mean we're comparing a multi-billion leading company R&D who's expanded into DSLR stabilization rigs to a fairly recent startup.
I wanna say tracking is more useful than even follow-free look (no mobile device ncessary on subject)...and that ~25 min flight time will obliterate Solo's ~15 min. Don't forget the advertised 3mi skybridge range...