Nearly all of my illustrations are created or modified by Paintshop Pro; you can view my portfolio at http://mjarts.com/portfolio.html
The feature I like best is that Paintshop Pro works with psd files--Photoshop files. The greatest feature of the Photoshop file is that it allows one to work with layered transparent backgrounds. With a layered transparent background, one can create illustrations in the same manner as the early Disney animations--paintings on transparent backgrounds, that when stacked, become a symphony of images. In that sense Paintshop Pro is very similar to GIMP. Both programs allow one to work with any type of image, and have very intuitive controls.
I have Photoshop on my computer, and use some of that programs filters; but Photoshop, for me, is a very non-intuitive program. To use Photoshop effectively one needs to use keystroke combinations that aren't in my brain, and don't make much sense.. Most of my work is done with a mouse, and while I use a few of Paintshop's keystrokes for altering contrast, hue, saturation and lightness, for the most part I use a mouse.
I use very old versions of Paintshop Pro--versions created by JASC back in the nineties, when dinosaurs ruled the earth. Paintshop Pro 6 and 8 both work in a W10-64 bit environment; I use version 8 for most of my work; I use version 6 for drafting. Version 6 is less of a memory hog, but it has limitations when using deformations.
I also use Paintshop Pro 8 for photo enhancement. I also use Lightroom for certain features; and need to use Photoshop to work with some aspects of RAW images. Most of my photo enhancement work is done using Paintshop Pro 8's built-in features.
The ONLY feature found in Photoshop that I can't find in my old Paintshop Pro versions in a 32-bit environment, is the retention of transparent backgrounds for png files created in Photoshop. In a 64-bit environment, this problem seems to have disappeared. The old versions of Paintshop Pro, in a 32-bit environment, will automatically flatten a png image created with a transparent background.
I'm a 'if it ain't broke...' kind of guy; I don't need to buy the latest software in order to do my work, when the software I use still works. I have CS5 installed in my Graphics computer that I use for video production; and there are tons of features available that I rarely explore. I don't like Adobe any more than I like Microsoft. I would probably have the same problems with Apple. I don't like computer manufacturers telling me what I have to do in order to use their product; I come from a pre-computer business world; and learned my skills while computer were new, and far more flexible. Before the companies became Galactic Empires...
Since I don't use the Corel products, I can't advise people on their capabilities. My assumption is that the Corel products are further improved from my antique versions. If the Corel products aren't satisfactory, try GIMP.
I don't think of my projects in terms of 'business problems that I need to solve'--I think in terms of what needs to be done to accomplish the task I've been given. I've been self-employed for the last 18 years; providing graphic arts, digital imaging, photo retouching and manipulation services; as well as video editing services. I use Adobe Creative Suite Production CS5; I'm PC based, using Adobe Creative Suite Production CS5- and AfterEffects. I have no employees; although there are many of my business tasks that I could have an employee do. The reality is that employees are expensive; a reality I was well aware of when working as a General Contractor in the construction industry.
Since I can honestly say that I use Paintshop Pro for nearly all of my graphic work, nearly all of the benefits I've received from 18 years of self-employment as a graphic artist are based on Paintshop Pro's capabilities.