I too did almost exactly this (albeit a few years ago) and moved to a Ubiquiti UniFi setup for my own place as well as a few small business sites I manage. The single biggest reason was that I became so sick of dealing with updates for "consumer" hardware, if there ever even were any. I didn't find open source to help much on that front either, the whole 30-30-30 song and dance or whatever it was and digging various supported versions up and dealing with the crummy UI and device-by-device work was a PITA and the hardware wasn't even generally cheaper.
It's absolutely not all roses on the UBNT side of things. They are exhibiting some of classic signs of expanding too fast and stretching themselves a bit too thin. In particular their hardware lineup is starting to get overly broad and they aren't being aggressive about retiring older products and keeping the matrix simple, which of course in turn represents an increasing maintenance burden. And some of their hardware which was disruptively priced and fantastic value at launch is now getting very old in the tooth. The UniFi controller UI can be shallow for more then simple usage of things like DNS/DHCP/RADIUS, granted a lot of HN types may have their own separate appliances/servers for that. Their USG has always been a bit of an orphan and only recently has really started getting the serious attention it needs. They've got some features on high end hardware that while niche still haven't been fleshed out. Their EdgeRouter hardware is keeping up better though.
That said the update process has continued to be pleasant and solid, and their support even for old devices has been excellent. There are no required ties to any external services. The hardware itself has been very reliable, and even the RMA process for when something burned out on us was decent (2 minute wait to online chat on a Sunday morning and immediate RMA approval). They've been quite good on security updates for a number of the major issues that have come up over the last year, and have had no major snafus (that MikroTik one storing passwords as plain text was painful/disturbing to see). While enterprises will have more advanced needs for SoHo situations even if they're not open source I think UBNT is worth consideration, particularly for those wearing plenty of hats already who are ready to cut down on cognitive load a bit.