Again, thanks for your answer.
I used PhotoLine back a couple of years and found it a very interesting piece of software. Extremely tight and fast, while a bit out of standards in terms of UI.

I completely agree with you on the "pixel perfect" graphics matter, it looks to me that this is kind of a basic feature that many vector applications just don't take into account (or at least not enough), and this is weird because these apps are often used to produce web contents.

Can I ask you two very specific questions on Serif DrawPlus X5?
1) when you set a stroke on a path, are you able to specify if the stroke should be put inside, in the middle or outside?
2) when you set a rounded corner on a path, what unit of measure can you use to set the roundness? Is it percentage, pixels, or others?

Thanks a lot for this interesting discussion.
Cheers!