I'm new here, so thanks for the thread and all the feedback!
I usually wear 519 levis 31x34, so it is more like skinny/slim.
Here's the size after +1year of wearing: 34 x 21.4 x 15.7 x 13.8. That's my sweet spot.
Gustin slim fit 32 will be ok after 1'' stretching on the waist but too large on thighs.
Gustin slim fit 31 will fit better on thighs but is very tight on the waist.
Basically I can completely close the 32 whereas I'll probably won't be...