I understand your feelings toward Google, I don't like them, either, in regards to their eavesdropping and data-gathering. They're probably the biggest data harvester in the world now. But, we're talking TV shows now so I'm ok with it.
One issue I have with the guide is that *it* is tied to the Internet. I wish they would include an option for PSIP EPG that is delivered over the air from the television stations themselves. The ideal OTA DVR, in my eyes, would be capable of streaming content, have two or more tuners, and be able to get programming information off the air rather than needing to be connected to the internet. That way, if you've got a secluded cabin or you live in a rural area with no internet you can still programming guide. Of course, the OTA program guides are suspect to errors at times...but so are the Internet furnished guides...but maybe not as much?
We and the kids are planning on having Internet for the foreseeable future, so hopefully the Stream+ will do us ok (as will our Tivo Roamio OTA that relies on the Internet for guide info).
I do have an older ($30) Insigna set-top-box that has DVR capabilities with it...can connect a storage device via the USB connection. It has a pretty fair tuner on it. I've got to admit the guide info is good, but the filename setup it uses to record programs is a bit cryptic. I've also got an older Samsung HD STB with no recording capabilites and it has a very good tuner. So, if the apocalypse hits we'll still be able to watch it with OTA signals.