I'm guessing, along with the others, that you felt good in #1 and #7, which are the outfits I happen to like most. However, I can easily see why you would run into problems with this jacket because that scrunched sleeve detail would drive me batty.
I also think the proportions of this blazer look best on you (at least on the basis of these pictures) with bootcuts. That is another factor making me prefer these outfits, along with the crisp yet gentle contrast of the grey and white.
Yet another factor: tuck vs. no tuck. As you know, I adore you in tucked and semi-tucked tops as a rule and think they look wonderful on you. But in this case, with the jacket, I prefer the untucked looks. Why? Because it allows the shape of the jacket to take the stage and shows the gentle sweep of waist and hip in a very flattering way. When echoed by the bootcut jeans, this is a super look!
I don't think the colour, per se, is the problem. Though I don't know if this grey is one of your best colours, it's definitely good on you, particularly in relation to white, black, or ink. I think this item (the jacket) is not perfect for you. When you tried the knit jacket at NAS we also both agreed it did you no favours. I think it's possible you could find a knit that would work well, but so far, these ones haven't hit the jackpot.