Please note that all Tivo Bolt+ units below sit on a hard surface with open ventilation on all sides. (It might be time to get an external fan.) Temp in the room never goes above 74 and it sits behind a UPS. (Yes, it could still get zapped through the Coax or the Ethernet connection but that hasn't happened. Yet.) Original Tivo Bolt+ purchased on April 2017 through upgrade program for retiring Tivo HD Tivo Bolt+ #1 dies in May, 2018, four flashing lights of death Rep tried to charge me $50 for replacement and had to get him to find my warranty. (It's at this point that I wisely back up my season passes to the Roamio Pro in case the next Bolt+ dies again. Sure, I lose all my data but at least I won't have to rebuild the season pass list. Tivo really needs to add a feature that allows the database to be backed up so that old episodes mark deleted or already recorded are skipped.) Tivo Bolt+ #2 dies in September 2018, unit will not power on except for flash of one red light that fades and a weak beep. They insist on sending me another power brick. That changes nothing. Tivo Bolt+ #3 dies in June 2019, unit will not power on except for flash of one red light that fades and a weak beep. (They are not even bothering with the replacement power brick this time. Tivo Bolt+ #4 arrives but will not tune any channels. Tried two known good cable cards and known good coax connection. To Tivo's credit, when the rep started to point the finger back at Spectrum after all this trouble shooting, I asked for a Supervisor and he sent me another replacement unit right away without the credit card advanced replacement. Tivo Bolt+ #5 arrives today and works. For how long do you think? That said, I have a Tivo HD (2009) that still works and a Roamio Pro (2014) and Premiere (2011) that still work fine. I still have my first Tivo, the Sony from 2000 in a box and I bet if I plugged it in it would work. I dunno if I have just had a run of bad luck and only Tivo really knows if their build quality on Bolt+ units is ****, but my experience says it is. Fortunately, after receiving #1 last year and looking at how flimsy it was and noting the small cooling fan I did something I seldom do on most electronics and that was buy the longest warranty that I could. Thank Crom that I did. tldr: Keep your Roamio Pro/Premiere as long as you can. If you have a 4k display it probably has the app you need natively so don't sweet not having 4k through the Tivo.