Any jeans will stretch more or less, depending on fabric, wash, etc
So you're one will do for sure.
To me, your belther looks too much skinny, this cut is meant to be bit more relaxed, it's a regular-slim cut indeed.
I've got a pair, 828t ones, and I love it aswell but I've to admit I like how they shape my legs softly.
More like this picture:
So size up, imho :)