What do you like best?
Sai allows a broad compatibility of files, so normally I start with my hand sketch exported, or direct digital sketch in Sai, and once I decide to use complex tools, I can save the file as a .PSD to continue in the other program, which is really useful.
Why do I insist that the simplicity and quickness are virtues in Paint tool Sai? Because it has varied and effective tools for processing lineart, -whether in possession or not of drawing hardware like a graphic tablet- such as Line, Curve, and Pen. These specific tools used to DELINEATE are coupled with the possibility of constant manipulation thanks to its automatic NODES, resulting in a perfect layout and personal taste.
Now, technically speaking, Sai is a free software specifically designed for drawing that you can download in various languages according to your needs, completely free and not at all heavy. You can open an image in any color mode, save as .jpg and .png with transparency, you can choose to work full screen, you can verify keyboard shortcuts, configure the image size and canvas, and more. In my opinion, Sai is made for convenience, and that's wonderful.
What do you dislike?
Do I have something to say against it? Not that I can think of. I use Sai more every time, and I have familiarized with it without a problem, I'm really happy with this program and the ability to link it with Photoshop, I think it's my favourite item to compose a drawing on, since I mostly prefer to do colouring there. That means that I'm not using SAI to its maximum potential... Can you imagine?
Recommendations to others considering the product
So, for those who are used to working with Adobe programs and wish to broaden their horizons in illustration, I would recommend Sai with absolute confidence. I could say that Sai and Photoshop are allies in the process of illustration: both share certain keyboard commands, the use of nodes, the ability to work in layers and some really useful blending modes, effective selection tools, both work with layer masks, to name a few. Both programs complement each other to achieve limitless image results.
Well, I hope that if you use this program you'll find it as useful as I do, and that you'll be able to exploit it to the fullest. So long and good luck! Do not forget to visit my Behance profile, if you want to see some of my doodles and other works.
What business problems are you solving with the product? What benefits have you realized?
I need to draw everytime in my job. Today, Sai is the software I use the most for my pieces since I discovered it, and I've been liking it more with each day since then.
This is mainly due to the ease in the handling of tools and variables, I think it is much more functional and tidy than Adobe Photoshop for processing Line Art. (Normally, all my works are made with the use of Sai and Photoshop)