They're not officially supported, but there is a community integration:
I only have one LIFX bulb and don't currently use it, but it worked well for me when I did. Being WiFi devices, these eliminate the potential Zigbee mesh problem, but I wouldn't fill my whole house with these (or any WiFi device). The price difference from Hue--which, again, works quite well as its own system if you want my opinion--doesn't look significantly different. (I only have one of these because they have an 1100-lm offering.)
I haven't compared side by side, but a friend has the Sengled strips and I have Hue (he does also have Hue bulbs to compare). Hue does a wide range of color temperatures well, in my opinion. Sengled does best warm, I think around 2700K, though I like the 4000K strip output enough that it doesn't seem different from the Hue bulbs. However, it definitely can't get as warm as Hue. Hue may not be as bright at all colors but the strips are better than the bulbs in my experience--which I admit is a bit limited since mine are almost always at some shade of white. From a technical perspective, I see how Hue can be better: their lightstrip is a five-channel kind (RGB plus warm and cool white), whereas Sengled's is four (RGB plus white, presumably warm).
