The ENFP is still more immersed and energetic in ideas, in talking, philosophying somewhat.. It's a stereotype, sure, but a good one (according to me! I mean, granted, stereotypes suck, but I'm going to use them under the assumption that we all know it's not the end of the world if they're stated in simple message board posts.). ISFPs kind of have a quieter wisdom in comparison.. I think they can be very immersed in action too.. and very specialized at certain things they do.. while an ENFP loves being well rounded and even in certain actions, they are coming at it from some giddy, conceptual point of view. Not simply "as it is". I'm not going to explain what I mean though, because I feel particularly lazy and want to move on.
Lastly, Ne will and can feel it has an opinion in just about anything it's researched -and draw connections to new things through that too.. while Se enforces an experiential standard. Their interest drops if tangible connections aren't made (that's not bad or anything.. although rude Se types - ESFPs mostly - sometimes try to cover up their insecurity and shoot people down if conversations get too far out of their realm of experience. They are the people who insult you with: "Stop trying to talk like 'smart people'". Or "You think too much." ISFPs aren't that rude, but kind of blank and pleasant in these moments. "Uh.. cool.")
This post brought to you by: Some guy who doesn't know if he's ISFP, INFP, ENFP, ESFP