I hesitate without knowing benefits because I have those big thorough books for Draw9 and PhotoPaint and don't know if they'd still be usable. But the interface is so hard compared to Photoshop, which is the easiest I've used.
Are there features added worth having in the later versions, and is the interface any more intuitive to use?
I've always preferred CorelDraw to Illustrator and Photoshop to PhotoPaint. I don't think I'm alone there. Actually, the current version of Corel is 13 (or, as they put it: X3). It's pretty sweet.
Edit: Sorry, I misread your subject. I see you have 9 and are wondering whether 13 is better. Yes, slightly. The alignment tool is devilishly difficult until one realizes that it works on all selected objects instead of on only one object at a time. But CorelDraw is still tweaky when it comes to moving many objects (which necessitates re-aligning them) and that re-alignment is still too many clicks away.
[edited by: MarkFilipak at 4:14 am (utc) on Mar. 15, 2008]