This year I went back to Sitka gear from KUIU. Probably one of the few, if any. I can't stand KUIU camo patterns. I looked at Kryptek and may consider them in the future, but I really liked Sitka when I wore them in the past.
In the past, I owned the 90% Jacket, and it worked fine when layering. I went with the Jetstream Jacket this time. It also seems slight, but I am sure it will perform very well based upon reviews. I purchased the Kelvin Jacket, but I decided to send it back. I am replacing with the Kelvin Light as I think it will work better with my style of hunting. I am also sending back the Mountain Pant, because I do not much care for the knee pads. I think the Mountain Pant was pretty close to the Attack Pant. I am going with the Ascent Pant as I will be using them in September for archery elk. I did keep a pair of KUIU Attack Pants, in solid, for the later rifle season. As far as merino wool base layers, I use First Lite and will not be changing.
When comparing the durability of the 90% pants to the Attack pants (and I have had two pairs of Attack Pants), I think the 90% were more durable. The jackets were equal in durability. Gloves, I give the edge to Sitka for durability and warmth, but things may change with KUIU's new glove system.
I will admit KUIU is using better materials. Pricing, KUIU unless you get a discount from Sitka. Resale, KUIU again.
In the future, I will be watching Kryptek and First Lite. For me, KUIU is done unless they change their camo pattern.