I own a recent Led Lenser, the MT10 that I picked up on a whim after seeing similar optics in a Coast flashlight. Here’s the story.
One of my buddies had picked up a Coast G450 from a Home Depot on sale for $20:
When I tried the focusing system, I was impressed by the very wide flood when zoomed out. When zoomed in, the beam was very similar to a dedicated thrower, with a bright hotspot and some usable spill. Now I had played around with aspheric lens zoomies before, and I could tell that the Coast light was much superior, especially with almost no loss of lumens at maximum throw. Even the flood was wider than any zoomie I’d tried. This youtube video shows what the beam looks like in both modes (skip ahead to 0:50): Coast G450 flashlight testing! - YouTube
Sadly, the Coast light used 6 AA batteries, and that was a dealbreaker. But I was interested in picking up a flashlight with similar optics, except with support for a lithium-ion battery. So I looked around and learned that both Coast and Led Lenser had similar optics, and it was patented. I found a Led Lenser MT10 that was decently discounted (but still overpriced IMO), and it used 18650s.
When I got the MT10, it turned out to be a disappointment. The flood was narrower than I was hoping for and slightly square with ringing at the edges. The throw hotspot was an unfocused square and circle overlayed on top of each other, and quite ugly with no usable spill. So why was the Coast beam so much better? I think it has to do with the difference in size of the optics. The MT10 optic measures 1 inch across, while the Coast was at least 1.7 inches. I think the Led Lenser/Coast focusing system only works well if you have larger optics, and since the MT10 was a smaller flashlight, Led Lenser made some compromises that gave poor results, unlike the Coast light.
I don’t have any other Led Lensers, so my opinion is only based on the MT10. I’m still hoping to find a flashlight that has a beam pattern like the Coast, but I doubt that will be possible in typical 18650/21700-sized light.