What do you use your Tivo for? If it's for cable, your only other alternative is probably the cable company's hardware. For streaming, any of the Roku/Fire/Google devices work pretty well. For OTA antenna TV, a Tablo or Channels DVR are popular choices.

 

OTA.

 

A basic Roamio does OTA just fine. I assume you were paying for cable before? If you still want cable channels, just switch to streaming with a cloud DVR (YouTube TV, Sling, Hulu Live, DirecTV Stream, etc.).

 

ChannelsDVR with a Silicone Dust Flex 4K works well for OTA.

 

Directv Stream + $49 Gemini boxes readily available on eBay and Walmart. I made this transition about 18 months ago and it's been stellar.

 

Yes this is the most similar to what the OP is used to with TiVo and cable DVRs. It has number buttons on the remote and the experience is near identical to linear cable/satellite.

 

The new Gemini Airs cost a fortune, but the older plain Gemini (C71KW-400) models are a steal for about $49 at Walmart. I got mine mostly because the Gemini Air doesn't support Ethernet and I prefer to keep my streamers hard-wired, but I love it. It has a really nice backlit remote too.

 

Wasn’t there some issue with some of the older Gemini/Osprey boxes where they wouldn’t take a firmware update or couldn’t be activated to work or something?

 

As I recall hearing it reported, some of the older boxes (still branded as AT&T?), that apparently were turned off and did not get updates for the long transition period from AT&T and DirecTV needed new firmware to be updated to connect to the newer DirecTV Stream site and to be updated and activated. The site that held that older firmware update for the transition was reportedly turned off at some point (by AT&T?). The reports also indicated that sometimes you could force a full reset (pushing the reset button, waiting for the splash screen, and pressing the reset button again, through 10 cycles to force an even deeper reset). As with all such reports, your mileage will vary, and caveat emptor regarding purchasing refurbished units.