Gee...thanks. You guys are making this tough. I was kind of all in on a Megatarp being my do it all shelter, then you had to throw this Cimarron logic into the mix. As long as the shelter is safe, I value weight above just about everything else and am looking for that 4 season option to run a stove. I already have the Ti Goat WiFi, just can't decide on the shelter.
However, my situation is a little bit different in weighing the options since I don't like to carry trekking poles unless needed to pitch a shelter. For this purpose I need 2 for the mega and just one for the Cimarron. I figure the stakes and lines between the two shelters are pretty much a wash in weight, as I would use the same stakes and line and weight would be right in the ballpark.
Using the two options and my current trekking poles (Leki Carbonlite XL) which are 7 ounces each the two shelters come out within 3 ounces.
Megatarp 21oz
Annex 6oz
Poles x 2 14oz
Total 41oz
Cimarron 36oz
Pole 7oz
Jack 1oz
Total 44oz
At that point, it seems almost like a no brainer to go with the Cimarron. Not even mentioning that it is over $200 cheaper than the Mega/Annex option. However, since I really don't use the poles for trekking, I was going to get some dedicated tent poles from Ruta Locura once I settled on the shelter. That would cut the weight down on the Mega to 33oz and Cimarron to 41oz.
For solo applications half a pound gives me pause, but I probably wouldn't use either of these for solo hunting so that can be dispersed a bit. I'm now leaning toward the Cimarron, but really can't decide. Getting the Cimarron would also lean me in the direction of picking up a Hilleberg Akto or Enan for bomb proof solo late season expeditions.