Hi
I personally use both efficiently. Mostly Graphic Design (Logo Design / Advertising)
- Illustrators advantages
1. is being more popular among printing presses, so I had to learn it so I can always send designs to printing.
2. Arabic Handling does not cause it to crash
3. EPS handling
Several other features make illustrator a real pain such as those I daily confront:
1. Curves & nodes handling in Illustrator stinks
2. The trim and intersect in illustrator looses the objects in action while in corel they remain
3. No sheets in illustrator, so if you need to export several sheets into a single PDF, it takes 5 minutes in corel and 5 hours in Illustrator
4. Can't control gradient precision in Illustaror, direction is numerical in AI and can't offset the center and direction easily
5. can't export selection only in AI as in corel
... the list of corel advantages never ends