So like every person who started drawing with a tablet in the early 2000s, I have my roots in photoshop when it comes to digital art. I had that program before I even had a tablet and was just messing around with a mouse. But when paint tool sai came out, it quickly became my main program for everything. I just liked how simple it was, I was struggling with translating my traditional art skills to digital form and the structure of SAI made it more comfortable because it didn't feel like a huge jump in tools or process---you put color on page and mix and blend or paint over with another color easy-peasy. I used PS to edit my final piece tho, but man Photoshop is heavy on my system and expensive af so fuck 'em lol.
Paint tool Sai is still my main for all things related to illustrated painted pieces. But when it comes to comic making, everything but thumbnails is in CSP EX. CSP for me was kind of like catalyst for comic-making. I hate wasting money, you know, so when I decided to buy the Pro version at full price I made sure to use it for the first short comic I managed to finish XD;;
It was the same when I decided to upgrade to EX. Thinking about the money i spent helped motivate me more to be actively using the program lol. I mean I always wanted to try drawing comics but the buy definitely solidified my resolve.
Anyways, I think it was worth it. I like how specific it is to this trade and all the cool assets and features it has. I was worried about sketching in it because I'm very particular about my draft brushes---basically I just really like and am used to SAI's normal soft brush. I use that for everything haha. But CSP has a similar brush literally titled "SAI brush" I downloaded from assets, so I'm solid lol