Re: ULTRA G\'s ARE BACK!!!!!!!
CPFman, the Ultra-G's beam is about the same as the Arc AAA in brightness and color. It has a wider spill, which I like. The electronics are possibly a bit less efficient, but since it uses a larger battery (AA instead of AAA), it still runs much longer.
The Peak Matterhorns run their LED's at lower current than the Arc and Ultra do. That means the 1-led Matterhorn is noticably dimmer than the Arc. This is deliberate and reflects a more conservative design approach; Peak runs the led within the manufacturer specifications while Arc and CMG overdrive the leds. The 3-led Peak is somewhat brighter than the Arc AAA. Both Peaks have even narrower spill beam than the Arc. Some people like the resulting somewhat longer throw, but I think the narrower spill is a longer shortcoming and one doesn't buy a keychain light for long throw.
Nonetheless, the Peaks are about the closest you can get to an Arc right now, without resorting to the collector market. Also, the Peak "snow" leds should have much whiter color than the Ultra or the non-Luxeon Arcs ever had.