From time to time I review the websites of the various LED sources I've accumulated in the hopes of finding something new, and last night I did:
If those specifications are to be believed, they put the efficacy at 105+ lumens/watt, the best I've seen in an LED lamp that I can actually buy (sorry C. Crane!). The price is typical of an LED lamp of that brightness.
I'll be ordering one soon, even though I'm not sure where I'll use it, and will be sure to add it to the Products and review it once I have one.
A quick cost-per-megalumen-hour calculation of this lamp compared to the first 950-lumen CFL I found via Google comes out like this:
this LED lamp:
dollars-per-mlh = 3.34365
a similar-brightness CFL:
dollars-per-mlh = 2.63158
CFL specifications from: