Zara has been a long time favorite of mine but it's only recently that Massimo Dutti (owned by the same parent company) popped onto my radar. I actually noticed it when we were in Italy and swooned over the mannequins clothed in chic monotone neutrals.
After browsing the website, I'd describe it as the mature, sophisticated older sister of Zara. Those timeless pieces, that will go with everything in your closet but require a bit of an investment.
I'd love to add these pieces to my wardrobe to transition from the last nights of summer into the start of early fall.