Ubiquiti is reputable and has the infrastructure to manage sensitive data from many companies. The software phones home and is cloud based for logging in and back ups etc, however its network information and settings rather than personal information. This does include data about your devices, sites visited, apps used etc. However, as a b2b rather than a consumer facing company mainly, they are not really into data mining, yet. I’ve used them for my business. It’s a bit pricy for my home needs, but I’m due an upgrade soon and will be looking at their equipment. It works well together, is both powerful and mainly intuitive.

Any internet connecting hardware theoretically has access to all your data passing through it. So, I’d either go ubiquiti or open source. My understanding is that the open source options are playing catch up as most modern routers don’t release open drivers for their components. So, although the software is theoretically equal, practically it isn’t, but that may change with openwrt releasing a new router soon. If you need stuff now, I’d get ubiquiti.