I am a firm believer in sticking with something that works, so when I find a paint that works well for me it takes a lot to switch to something else.
Sherwin-Williams Duration Home is the wall paint that I have used and trusted for many years. In my opinion, its greatest feature is the stain blocking technology. As you apply the second coat you can tell that the walls have been sealed really well.
It comes in 4 sheen levels: Flat, Matte, Satin, and Semi-Gloss. I use Matte the most, then Satin, then Flat, and I don't use the Semi-gloss because my favorite Semi-gloss paint is SW ProClassic.
I do not live close to a Benjamin Moore Dealer, otherwise, Regal Select & Aura would be on this list too.
The deciding factors on what sheen should be used goes like this:
Flat - When no shine at all is preferred. This can be on walls that have way too many imperfections where repairs is not feasible for your budget. Large walls with a lot of light is a good example where I would recommend a flat. Ceilings where moisture will not be present is another. (The Duration Flat is a fairly new product and is a true flat, unlike others high end flats that end up having a matte-like finish.)
Matte - This is the next incremental step up in sheen and is great for bedrooms, hallways, living rooms, and dining rooms. Its angular sheen still masks some imperfections but gives you greater gleanability than the flat.
Satin - My favorite paint for bathrooms with moisture or any room that require repetitive cleaning, like a laundry or mudroom. The sheen, to me, is still subtle and elegant.
Before you do any cleaning on your walls be sure the paint is fully cured, which can take up to 30 days.
Stuck on whether you should buy the paint yourself or let your painter buy it? Read this: https://www.areypainting.com/single-post/2016/12/23/What-interior-paint-should-I-buy-for-my-painter---Arey-Painting