I ordered these to replace a failed GU10 compact fluorescent bulb in my kitchen. The supplier of the original lights (B&Q) helpfully don't supply the bulbs on their own, so I found myself ordering these.
They are well enough made and light up more quickly than the existing bulbs. The colour temperature is 3000K, which is a touch whiter than the normal 2700K that "warm white" bulbs tend to be, but in use you can barely notice this. The lighting is nice and diffuse and the bulbs have a concentric circular obscuring pattern on the lens. These bulbs are slightly shorter than the one I was replacing and slotted right into place easily (there is no depth constraint with my light fittings... other than the floor of the room above!).
I bought a pack of three thinking that one day I may need to replace another (of the 7 total) in my kitchen. It's a good job I did a second one failed the day after these arrived! They have been in use for a week or so now and all is well.