I almost always use JenzZx2 for everything. I'm an auto enthusiast and that was my first car that I started modifying, and it also is what brought my husband and I together! However, I was slightly concerned about how it would come up in searches (not that many people search for me, haha).
So I went with JenAgain. A) because I had to make up another screen name.. again. B) there are 1398562309483 Jen's in the world. I'm just another.