Most people consider Corel to be easier to learn (its cheaper too) but some say if you're a Mac person (not a PC person) Illustrator is easier. I think Illustrator is more widely used. We receive a lot of logos from businesses and most of them are ai rather than cdr files. One thing I like about Corel is how the font feature shows you how hilighted text will look in a different font when you're looking through different font options. That's a big time-saver for me.