PAINT TOOL SAI or CLIP STUDIO PAINT?

Hewwo  
i wanna ask you if you prefer using SAI or CSP…  
I use the first but i wanna understand what’s the better…  
Any tips on shading techniques on SAI?

they both aren’t free…  
and I don’t use both

@thatusualguy06  
oh okay

I’ve used Clip, its good but never been able to use Sai tho one day I wanna try it.

I use CSP, but SAI is also a solid pick.

I’m more of a trad artist, but I used to use Paint tool SAI. I tried to use CSP for a while but it got too expensive. SAI is good for beginners, as there is a learning curve for CSP and a price range is a little too high for some people.
SAI is considered dead softwear (as far as I saw) so its easy to download for free.