I don't really like super smooth mashed potato's unless they're been baked or such after so you get a crusty shell over the serving.
For the most part, I want them to have a little potato texture. Even when I make instant mashed, I don't use as much hot water as the package calls for, because it makes them too soupy.
When I feel like fooling with real potato's, I often make what I call my "smashed potato's". I get the mini potato's (usually either the red skin or the goldens) that come in a steamer bag and either steam or boil them. Then I dump them in a bowl, make sure each potato gets bashed up fairly decently by a fork. Usually I top this with shredded cheese, real bacon bits and butter, plus seasoned salt and pepper. There's one type of steamer bag that you can add stuff to cook with the potato's, and I usually through in some rosemary and butter with those.
Smashed potato's are one of my favorite cold night, curl up in my chair with a good book or movie and get fat dinners.