Kuiu Attacks--I tend to thing of these as a soft shell material pant, brushed feel on the inside. I like the opening of the top pockets. Not an early season pant in my opinion, 4 way stretch and comfortable(I have the old Canadian version no hip zips). The closest pant I have to them is a mountain hardware chockstone, similar top opening pocket and softshell material. no cargo pockets.
Kuiu Tiburons--good early season pant, Breathable hip zips, 2 way stretch. comfort not bad. seem pretty durable (A few season under the belt), I believe they have some sort of rip stop sewn into them, kind of close to the EB guides with the EB'S being a touch more comfortable but not as durable in my opinion.
Prana Zion & Brions. Comfortable, stretchy I prefer the brion's for everyday and office work.Same material as far as I tell. They lack the cargo pocket and reinforcements on the bottom of the zion's I would say the the material leans more to a cordura feel with a slight brushed inside. bottom line I like these pants, the Zions I have are the old sizing and are on the baggy side, next pair I will size down. Not a big fan of the zippers on the cargo pocket.
sitka--no experience
kuhl--I like my kuhl renegades and another type not sure of the name. Stretchy with a nylon feel,brushed inside, breathable. great for everyday use. most pairs I have have some sort of thread loose. . .somewhere.
Outdoor research makes some great pants too, The ferrosi's are my go to hiking pant for warm weather. Super stretchy, Comfortable, breathable, durable , light. I also have another pair by them not sure on name, wearing them now that I like.
I try not to pay over 50 for a pair of pants, if you look around you can find some deals. I think the only ones a paid more for were the kuiu.