I returned a Bolt after less than a week since the PQ was a huge step backwards compared to my Premiere (as evaluated on a JVC DLA-RS1x @ 104" and a 55" Sony XBR-X930E, both fully calibrated and color managed via an AVFoundry VideoEQ Pro sourced by a Reon HQV in my Onkyo TX-NR5007 AVR.) I ended up replacing the HDD in my Premiere and keeping it. The Premiere design is THX certified. Its a QUALITY product - something Tivo knows nothing about anymore (from a hardware OR software perspective.) After seeing how pre-roll ads are now being involuntarily forced on subscribers, it made me even more glad I did this.
Posts like the one from "TostitoBandito" above are both ill-informed and just completely wrong. People think because its digital end-to-end now, that quality is all "the same". That its all about the "bit rate". Wrong and wrong. Arris makes both the Edge and the Bolt devices which are aimed primarily at cable companies. As its a commodity item for them the main requirement is "cheapest COGS which is 'good enough' for the masses." Unfortunately this is a really, really low bar. It means an "anything in / utter garbage out" cheap SoC to do all the video processing. I expect there's no significant difference between the Bolt and Edge, they likely both have unacceptable PQ for those of us who actually still care. Just because some might find the PQ "ok" or even "perfect" doesn't make it so.
I just hope something else comes along by the time both my Tivo Premieres die. Yeah, the few apps they support are super slow. They reboot randomly overnight for no apparent reason. Did I mention over a year later and the new guide data still totally sucks? But they mostly work so I just have to live with the quirks. The horrendous quality products and bait and switch forced ads on people who already pay a monthly fee is so egregious and slimy its pathetic. I pity Tivo, they used to have really great products that enabled their customers to improve their lives, albeit at a cost. Now they just see them as a hoard of mindless dollar signs. Truthfully, if this is the only way they can continue, I'd rather see them go out of business.