I am a remodeling contractor,but in the beginning(early teens and on…)I painted,and I mean A LOT! I also worked in various paint stores when I was in high school,and learned most of what I know from “old school” guys that had already been around paint for 30 yrs+,when at first all you had was lead paint and eventually oil based paint,fortunately one is now outlawed and the other is becoming pointless considering todays advancements in paint technologies…blah,blah…I could go on and on…but,I’m even starting to bore myself,so…1)DO NOT!! go to a home store for your paint(BEHR,dutchboy,sears,the junk at menards etc.) 2)Do go to independents(j.c.lichts,pathmann paint,epco etc.) in these stores you will find BENJAMIN MOORE paintsnoteSherwin Williams has some decent top of the line paints and they are a little less expensive,but they don’t last anywhere near as long. 3)Use benjamin moore,it is the best interior paint on the market.The finishes break down like this,all finish names are preceded with the word "REGAL"which denotes the paint “LINE”(top of,in this case),and has nothing to do with finish distinctions.#1-WALL SATIN,a true flat paint,meaning it reflects NO light,whether looking directly at it or looking from standing at an angle to the surface,be it slight or sharp,you will see NO shine this is a true flat.#2-MATTE(purple label)this is basically a flat finish that has a SLIGHT side sheen and MINIMAL washability,good for places out of the reach of most human contact,you can gently “wipe” this paint with warm water,you can’t "scrub"this paint ,because it is basically a flat finish,it will leave shiney spots everywhere you attempt to do so.These first two paints are great for walls that have a lot of defects to hide,but are not very durable against wear and cleaning #3-AQUA-VELVET,eggshell finish this has the direct appearance of a flat paint,but a considerable side sheen(looking from an angle,or down the length of the wall)I recommend this paint for most areas of the home,it has a nice warm look and throws light around the room that is usually pleasing to the eye,I say usually because the walls need to be in pretty good shape(noticeable tape joints,cracks,nail “pops”,holes etc.)need to be repaired or they will show when the lights are turned on,a painter worth his/her salt will include these things in figureing the estimate.You can wash,scrub and touch-up this paint very well.The next finishes are pearl,semi-gloss,gloss,high-gloss etc.I can tell you all about these,if you would like,just ask.So remember a few things;Appropriate paint for the right area(see above),ALWAYS use top of the line paint,it is expensive but in the long run,well worth it,Do not be afraid to ask questions and voice your concerns over something displeaseing you are the boss.Don’t fall for a"tailight warranty"most good painters should be willing to come back for touch-ups,fixing mistakes done by said painter, for at least 6 months and usually longer.Get it in writing.I hope this helps a little,you just happened to hit on topic I know a lot about,so I’m happy to help.