Thought I'd post an update on the Snow Peak 600 ULC Cone. First let me say Rand & Russ (Trail Designs) are awesome. They knocked out a custom Ti ULC Cone for my SP600 in a couple days, and only charged $40 for it since I already had their 12-10 stove and their Gram Cracker. A Ti ULC kit is normally $70. When I tested it though, I found it a bit lacking in efficiency. To boil two cups of cold water required over an ounce of alcohol and about 15 minutes of burn time. That isn't too bad really, you'd expect some compromise of efficiency in exchange for the convenience and space savings of the small cone. Much to their credit, when I contacted them with my test results they went back to the drawing board and improved the design, reducing the number and size of the vents and opening up the throat a little. They also included an optional pot screen that increases efficiency, especially in windy conditions.
Here's the kit minus potscreen:

(The lid is from from Tinny)
The beauty of it is, everything fits inside the SP600 (except the stakes):

That little fuel bottle is just 1 oz., but I found that alternatively you could fit two of the BPL "hockey puck" containers inside the mug, which together would hold 4 oz:

No idea how reliable they are for this purpose though.
Here's the SP600 & ULC Cone in action:

So for this Vers 2 of the cone I'm getting 2 cups, rolling boil, in 12 minutes on .8 oz of Everclear, without using the optional potscreen. The alcohol burned for one more minute. This is outdoors, 48 degree water and 45 degree air, slight breeze, 190 proof Everclear. That's a pretty significant imrovement, kudos to Russ & Rand!
Here's the optional pot screen:


I found it adds a bit of fidget factor in addition to its weight, but probably is worth carrying for windy conditions.
Here's the weights (in ounces):
ULC Ti Cone: .625
SP600 Mug: 2.875
SP600 Lid: .5
12-10 Stove: .5
Ti Stakes (2): .375
Optional Potscreen: .625
Total: 5.5 oz
Awesome job Rand & Russ!
Gordon