Those look really tight in the thighs to me. Main thing for me would be comfort, so I guess that depends more on you along with what sort of look you're going for. It probably helps that the ST-100x don't have a suicide rise like some APC/N&F cuts though. Also (strong no bromo) but I'm guessing you squat a lot from your quads? If you plan on getting bigger I'd just size up otherwise you're just gonna have a pair of jeans that won't fit you in a month or two lol - that was my experience at least.
dude, they're basically brand new, and even for that don't look crazy fitted. I didn't leave the house wearing either my apcs or somets for about a week they were so snug. fit is awesome on both now, give it a minute.