Fit / Comfort
So how do these pants rate in terms of fit and comfort? That will be different for every person. It is clear from trying each of these pants on that there are certain choices made which will please some while upsetting others. I'll try and talk about these pants as I go through them. For reference, I am a beanpole with a 31" waist, and a 32" inseam. I am 5'9" and 148 pounds.
Also, I want to add that while trying on these pants, I was wearing my usual G-Form X2 knee pads to see how they fit underneath each pant. These are a sleeve-style knee pad with a low profile, relatively-speaking, to other knee pads. In none of the pants did I find any issue with fitting knee pads and most of the pants had ample room to fit the largest knee pads.
First, I tried on the Patagonia Dirt Craft pant. These fit me like a glove. It was clear they had someone like me in mind when they made them. The waist of the Patagonia does not have any kind of external adjustment, like a belt, velcro, or adjustment buckle. These pants rely on having a stretchy waistband to fit a range of waists between 30-32." I think this might normally annoy me but somehow the waist is perfect for me. The ankle cuffs were an appropriate tightness. The leg openings are more relaxed than photos led me to believe. I thought they would be a slim or even a skinny fit, but I'd peg this as a regular fit. As far as how the Patagonia pants fit me, I couldn't find any faults. There was no extra material bunching up anywhere and there was nothing pulling the wrong way.
Next up, I tried on the Fox Ranger pants. These pants have a regular fit and hang vertically from the waist with ample room through the thighs and legs, at least for me. Unfortunately, I found that the waist was not small enough for me. The Ranger pants' waist is not stretchy either, with the main adjustability being a plastic buckle with an internal nylon webbing that slides through it. The nylon webbing is sewn inside the waist but is visible in the back at the top of the butt crack, and at the right hip where the buckle is visible. After I adjusted the waist to my size, fabric was bunching in two places. I found the whole waist adjustment mechanism on these pants weird since it was all only on the right side of the body. One good thing about the Fox Ranger pants was that the ankle cuffs were nice and tight.
Third, I tried on the Outdoor Research Freewheel pant. These pants were also a regular fit like the Fox Ranger pant. They easily fit my knee pads with room to spare. I also felt that someone with larger thighs wouldn't mind them. The waist adjustment was more sane, with a plastic buckle adjuster at both the right and left hip. This allows you to adjust them in sync with each other. Unlike the Fox, which uses one single long piece of nylon, the OR pants have two approximately four inch long pieces of nylon webbing at each hip with an adjuster. Finally, the ankle cuffs were nice and tight.
Fourth, I tried on the NF Lightweight trail pants. The waistband on these pants is just a tight elastic cuff. When I tried these on, I felt like the waist was aggressively tight. It's certainly stretchy enough to fit a range of sizes, but I experienced a constricting feeling with this waistband. As far as how the rest of the pant is cut to fit: I would peg them as a slim fit. I felt that out of the five pants in consideration, these were the snuggest fitting. The ankle cuffs, unlike the other pants, had no extra elastic built into them. That was not a problem for me but I think it could take a little extra adjusting to get these pants on for someone with larger feet or ankles.
Finally, I tried on the Endura pants. Moving to the opposite end of the spectrum from the NF, these were the most relaxed fitting pants of the five. The waist adjustment is accomplished with a strip of velcro across the back of the pants and two velcro tabs on each side that you can use to make the waist smaller. Thankfully, I didn't have to use these, as the pants fit me just fine with the adjustment tabs flat on the velcro. If I did have to use them, I think it would cause bunching of material around the waist, similar to what I experienced with the Fox Rangers. Which I wouldn't like. That would have caused me to downvote the Endura pants. Everything else about the Endura is "a little loose" but tight enough that it wouldn't be a problem. Even the ankle cuffs were "tight enough" which makes me think there are people who would actually find these perfect for them.
In conclusion, the comfortability and fit ranking for me was as follows, from best to worst fitting, although this really just reflects my personal bias for a regular-but-slightly-slim fit. Those who want a more relaxed fit should opt for the Endura's, and those who want a slimmer fit should opt for the NF's. The Fox fell to fourth place for me simply because the waist had material bunching around it which I find annoying, but someone with, say, a 32" waist probably wouldn't experience that, and they might be in third place instead.
1. Patagonia
2. Outdoor Research
3. Endura
4. Fox
5. NF