I've heard that Bearbottom makes high quality clothes for a good price, and heard from a lot of people, that they are also good for bigger guys with bigger thighs.
For reference, i'm 5'9" with a skinny-athletic build from the torso and up, and from the waist down i'm a stocky-athletic build. I got a big ol' fat **** and bigger thighs, nothing crazy though.
I assumed the shorts would be really big on me because i've heard that plus sized guys like this brand, so l sized down twice to small. They were tight as **** and I had to return them. I was hesitant to get an XL so l bought L instead. They are still a little tight, but fit pretty comfortably overall.
I was disappointed that they only had one cargo pocket, and it didn't even buckle, but it is what is. The comfort, feeling, and weight of these pants make up for it.
Overall, these are the most comfortable shorts i've ever bought.