I use Paintshop pro or Fireworks. for the web.
A long while back I used to use Corel but haven't in ages.
I even find Paint useful for creating sinple bitmaps.
Never had a copy of Illustrator but used it once or twice at work. I would have to use it a lot more to appreciate how it compares with PSP but I'm happy with the latter as my main picture/graphics editor.