Considering its diminutive size and unremarkable design the Humax DTR-T4000 packs one hell of a punch, offering a broad quantity of free and paid content including the YouView seven day roll-back EPG and BT TV's bespoke entertainment and sports offering.
Undoubtedly though it's the BT Sport Ultra HD channel that we're principally interested in, and without a doubt 4K UHD is the jewel in the BT YouView crown. Don't forget that extra content from Netflix and Amazon Prime Video though.
The box is easy to get to grips with, with an intuitive onscreen menu system that makes you more inclined to explore the on-demand content than before.
The EPG is nicely laid out, which makes it a doddle to find and watch TV shows from the past seven days.
The box's most important and likeable trait by far is the quality of the UHD channel. Utterly perfect for live sport, 4K images are astonishingly crisp and highly detailed.
We also like the way the live broadcast is directed to take full advantage of the greater clarity on offer.
The UHD channel needs more shows, even with the addition of Netflix and Amazon Prime. The on-demand repository also requires a massive boost to its 4K content.
Recording is fine but the fast forward and rewind functions aren't smooth and make it tricky to shuffle through a recording looking for a specific moment. Neither the remote control nor the box itself are going to win any design awards.
And for a significant portion of the population who don't have the option of a 40Mbps BT fibre broadband this is a complete non-starter.
More than ten years since the first HD broadcast the, ahem, goalposts have finally shifted again thanks to the BT Sport UHD channel.
The channel itself doesn't yet seem like the finished article but the fact is the picture quality is so spectacularly good it makes it nigh-on impossible to revert to inferior Full HD pics once you've had a taste of the 4K manna.
If you're a sport-loving BT Infinity subscriber the extra cost (£15/month and a one-off £49 charge) is almost a no-brainer, for non-BT customers the cost implications are higher and more complicated. You can check what it will cost you here on BT TV's webpage.
Ultra HD is just getting started of course, and with Sky and Virgin Media now offering their own packages, the BT Ultra HD box looks a little inferior by comparison.