I do too, and I feel Sandstorm has the superior security model of most of these platforms. But a key perk of Nextcloud is that it can be installed on cheap shared hosting which doesn't grant the customer root access.
Do you know how well NextCloud works in a home environment? Is it really easy to automate the punching of a hole in the home firewall to allow access from anywhere? If you know of a project that automates this punching, it's a great combo to nextcloud.
Cloudron.io is fairly similar, though makes some different design choices.