I'm happy to hear the puffy jacket was a success -- it looks so cool! I'd be tempted if it weren't for the fact that I cannot stop buying jackets.
I'm sorry the pants were not more successful. Your woes sound ALL too familiar to me (have you SEEN my dress shopping woes? even worse than pants!), even though I know we don't have the same fit challenges. Sorry to rant about the dominance of crops on your thread, I think they look so fantastic on others but I struggle with them on myself unless styled perfectly, and I have trouble finding pants that fit and look good, much less at full length. But I digress...So, if I understand correctly, one pair of pants were winners but the others are not? It may be that this brand is just not a slam dunk in fit for you, and requires trial and error. Say it along with me: It's NOT you, it's the pants. If it makes you feel any better, I tried on a burgundy faux shearling vest that I thought looked good until I turned to the side, and my side view is generally more flattering than my straight-on view -- OOOF, I looked huge. But it's the garment, not the body underneath. Some cuts simply look better on our individual bodies than others.
And I sympathize on the inconsistency of sizing. I hate having to size up when a brand is cut small -- it's never fun for the ego to see that larger size in the tag -- but it really sounds like this brand is all over the place sizing-wise. I hope the blazer works out! That was my other favorite piece with the puffer.