Throckmorton
Lifer
I use MSE2. Its fantastic, I like it because I can just install it and never have to see it again. I don't need all the additional features of other offerings. I know how to behave on the internet.
I use MSSE but it sucks. I've gotten two viruses and my coworker who runs it managed to install two malware toolbars on IE. If you look up comparisons, you'll see MSSE is better than nothing but pretty mediocre.