Blekit, I would consider looking at other places besides SuitSupply, or at least be much more picky with the cuts you choose. I know that maybe only 3-4 SuSu models really work for me, and I'd never consider buying a jacket or suit that isn't one of those models, regardless of how much I like the fabric.
Many of the cuts aren't particularly flattering on you; you'd definitely benefit from more structured shoulders for example, so Washington would probably look very good on you.
But in general, having a lot of jackets/suits is nice--and it seems like you have quite a few--but there comes a point where you prioritize quality (in this case, what flatters you) over quantity. I feel you've reached that point. Spend $1000 dollars on a La Spalla, or try another brand, rather than buying two Havana's this season. Or just stick with Lazios and Washingtons
I don't plan on buying anymore OTR suits in the foreseeable future, most of the ones I've already own has been bought 1-2 years ago. The only exceptions I've made this season was to try out the longer sizes so I could get the grip on the proper length of the jacket for me. I might make one more when winter comes to try out Washington fit in the winter. I do intend to have first bespoke suit made over the next few months and I'm sure it'll be a huge leap in quality comparing to anything else I have right now. And from what I hear once you go bespoke, you never go back ;)
Regarding shoulder issue you guys mention, it is rooted in kind of tailoring that is mostly available in Poland. The most popular brands offer almost exclusively suits with extremely structured, boxy shoulders which looked ridiculously on me. When I've started building my suit wardrobe I've gone in the opposite direction - thus I've chosen fits with natural shoulders (Havanas, Madisons, etc). Later I've tried cuts like Lazio and Harris and they've become my default choice for suits (3 out of 4 the most recent purchases). However, when it comes to sport coats (utilized for casual/smart-casual outfits) I would still consider an unstructured model as well - if I liked the fabric and pattern.