From what I have read from various places around the internet, it is very hard to realistically compare these two types because they are so similar. There is a ton of overlap, because, well, there is a ton of overlap. You would most likely know an ISFP from an ESFP when you meet them, but the differences in extroversion and introversion can be so subtle that they can only be recognized person, not described very well. I do all of the things the average ESFP description says, and I take a day or two by myself to reflect, use my experiences to generate ideas, and or get some work done. Like someone else said, taking a weekend to do housework sounds like soul sucking torture. I would much rather be out adventuring or watching the sunlight hit the windowpane with a sketchbook in my hand. I spend a lot of time listening to and making music, and seeking out new sensory experiences. I thrive on those experiences. I lust after them. Anyone who knows me would not describe me as mousy or timid. I get adventurous, fun, energetic, unpredictable, alternating quickly and unexpectedly between quiet listening and watching to jumping into activities with full force of enthusiasm and creativity. I can have fun where ever I am. Because of this, and because I am very understanding and accepting of people as they are, I have a lot of friends. There are always people around me in my school or work place, but I only share my inner self with a select few. Though I am sure I am an ISFP, I feel the introverted description of this type is waaaayy off. No ISFP I've ever met is actually like that. They are creative, dynamic, and enthusiastic about life.