These 4000k waveform BR30s have good brightness, good dimming, and excellent color rendering. Unfortunately they also have a pretty pronounced 120hz flicker, moreso than all my other much less expensive BR30s, which makes recording in slow motion untenable. Other than that they're a high quality bulb which you'd expect from waveform, and if you're not using them to shoot video like I am you should have no problems.

This is a great bulb, and my go-to replacement for any flood lights from now on. First bulb failed after a couple of months, Waveform had a replacement to me within days at no cost and no hassle. Great service and great products.

I bought the 4000K flood bulb to test and will be coming back for several more to upgrade my art studio lighting. The color rendering is excellent!

I purchased these bulbs specifically for a room dedicated to my parrots. I chose these, instead of the waveform avian lighting, after extensive research on the color temperature. The ones they list as avian lighting are far too high in temperature (6500K) for birds but these bulbs, in 5000K, are closer to what is ideal. They are installed in the new room, and look beautiful, but myself, and my birds, have not moved into the home yet as it still under renovation. I am using these in conjunction with other avian lights to provide the optimum indoor lighting system for my birds :). In the picture you can see the waveform bulb (on left) compared to a standard bulb (right)

I've had this light for a year and a half now, in a floor lamp connected to an in-line dimmer. Ideally I would be using an A21 in such a lamp, but Waveform doesn't make one that's dimmable in 4000K. 4000K, I could spend hours talking about this color temperature and very few companies offer 4000K, let alone 4000K in high or ultra high CRI. Not too warm, not too cool and that 95+ CRI really makes colors feel alive, especially reds, something that the majority of LED bulbs fall flat of doing. The in-line dimmer works pretty good for the most part, some positions on the slider may cause the bulb to flicker, but a little tweaking of the switch solves that. I highly recommend this bulb!

I love Waveform's website. There is so much information there. I've really gotten an education about light in general and lighting in particular. The BR30 4000K high CRI bulbs are wonderful in the interior rooms of my condo that receive little to no natural light. I look forward to gradually updating all the lights in my home with Waveform's Full Spectrum, High CRI bulbs. Also, shipping was efficient, and customer service response is excellent.

replaced older bulbs with the full spectrum - Oh my gosh, the difference!! Did one to see if I liked, then you see the difference in the light given off old bulbs (yellow!). Have 6 in kitchen now. We will be going each room.

Very bright. Plants around them growing nicely! And my SAD is under control!

Got the 4000K for recessed lights in bathrooms. The light is wonderful and the bulbs dim perfectly.

I bought 6 of these for my office 1 year ago and 2 have failed.

GIving 3 stars because the light quality is good and Waveform has been good about replacing.