All the bulbs gives a consistent level of light output and have no delay when switching them on (some LED bulbs have a delay).
I have the 3000K version and they are pretty "residential friendly" in their color temp. Really like that they are flicker-free...saves my sanity a bit. Even at 3000K they are just maybe still a tad yellow for my taste, but the 4000K were too blue...I'm supposing I might actually prefer a 3500K bulb but, until Waveform actually decides to make them, the 3000K may be the best for my general purposes with home lighting.
I was looking for a good non-flickering LED build for a long time and this is it! I've tested it with 240fps video recording and compared with IKEA LED bulbs. Works as advertised!
This updated, 2019 flicker-free version of Waveform's A19 bulb is the first LED bulb I could ever find to fulfill all the promises of a true replacement for tungsten:
• High CRI
• Actual warm color (2700K = regular, 3000K = "daylight" still nice and warm)
• No flicker whatsoever
• Truly as bright as claimed
• Completely quiet
Other bulbs I tried failed on at least one of those 5 points. Most have an unnatural color or aren't very bright. ALL flicker horribly, which gives me headaches instantly. Some, including Waveform's previous-generation A19s, make a slight "hissing" noise which is unsuitable for a bedroom or quiet home office.
Brand new, these bulbs are also a bit brighter than typical 60W tungstens, and this is actually good planning on Waveform's part: LEDs naturally lose brightness over the years and they want these to last a long time. They should drop from 800 Lumens to a still respectable 560 Lumens after 25,000 hours, according to the "L70" spec. Even for my home office used 7 days a week, this means I should expect at least 7 years out of them.
Given that Waveform's 6-pack is priced competitively (cheaper than tungsten if you factor in their longevity!), I am now recommending them to everyone I know as a better energy saving bulb than anything in local stores.