The defining feature of SAI 2 is its optimization. The software is incredibly lightweight (the installation file is barely over 5MB). It boots up instantly, saves massive files in seconds, and lags very little, even on older laptops with integrated graphics. If you find Photoshop sluggish or Clip Studio Paint bloated, SAI 2 feels like a breath of fresh air.
PaintTool SAI 2 is a great software for: paint tool sai 2
While SAI 2 is cheap (around $50 USD for a one-time license), that license does not always carry over to future major versions (e.g., if a hypothetical SAI 3 releases). Furthermore, the purchasing process can feel a bit dated compared to subscription models or totally free open-source alternatives. The defining feature of SAI 2 is its optimization