Here's a comparison of some of my favorites;
Web Authoring
Currently I am using Frontpage 2002(Both of my current home sites were done with Frontpage 2002) for the same reason as Don P. is(it was free with the software package I use). It is very easy to use but tends to be a bit too tied to MS for my taste, and many features only work with MS feature enabled web hosts(most aren't so enabled). If I were going to buy one it would be Namo(from JASC software(I really like how JASC PS Pro works!!). I have used both Mozilla and Word in the past and feel that they are very poor choices except for the simplest sites.