With most studies concluding that price is the most important factor in the early adoption of 4K/UHD TVs, Philips gets off to a great start by flogging its debut 4K/UHD TV for £500 less than any 65-inch rival.

This knock-down price isn't attached to a knock-down spec, either. The set has a huge array of connections; a design that lights up your room - literally - with its fetching Ambilight feature; online and DLNA features; and an enormously powerful video processing engine.

Philips 65PFL9708 Ultra HD review

This processing engine can contribute to some excellent picture quality with both native 4K/UHD and HD sources moreover, with the only serious rider being that you need to put considerable effort into learning your way round all the picture adjustments on offer if you always want to get the optimum performance from the set.

We liked

Ambilight is a great feature once you get used to it, the set's native 4K and HD pictures are excellent, and there's even a pretty powerful, clean audio system to keep the pictures company. The amount of picture tools at your disposal is extensive too, and the price represents great value.

We disliked

Philips' set tends to push sharpness a bit hard with its presets, motion can look a little distracting during 3D viewing, there aren't many useful services on Philips' online platform, and you need to spend more time than usual revisiting Philips' picture menus to tweak aspects of the TV's processing engine.

Final verdict

As first steps into the world of 4K go, the 65PFL9708S is a pretty spectacular effort.

For despite being comfortably the cheapest 65-inch 4K TV to date, Philips' 4K debutante is not by any means a basic, stripped-down affair. On the contrary, it boasts a completely new 4K-friendly processing system, Philips' most complete Ambilight system, DLNA/USB multimedia playback and access to Philips' latest (admittedly content-light) Smart TV platform.

So long as you're not afraid to put in a bit of regular picture set-up leg work it's also capable of excellent picture quality, and can accompany these pictures with a superior soundstage. In short, it's fair to say the 4K price war starts here.

Also consider

If you can find an extra £500 you could consider the Samsung UE65F9000 (read the 55-inch version's review here) and Sony KDL-65X9005A. Both of these deliver slightly more precision in both their native UHD and upscaled HD images, and need less regular care with their setup features. And both have more fulsome online services. They don't have Ambilight, though.

A thousand pounds more gets you to three more 65-inch 4K/UHD rivals: the Panasonic L65WT600, the LG 65LA970W and the Toshiba 65L9363.

TV Buyers Guides

The first of these scores a major coup by supporting the new HDMI 2.0 connection standard with its support for 50/60Hz 4K feeds with full colour sampling, while the LG delivers arguably the best 4K pictures we've seen so far, despite some minor contrast flaws.

The weakest of the 65PFL9708S's rivals is the Toshiba model. It's a decent-enough performer, but it just doesn't have any particular justification for costing £1000 more than the 65PFL9708S.