Tuning shops use the Scanmatik 2 Pro to read and write bootloader-mode ECUs (e.g., Simos 18.1, EDC17). The stable K-Line and CAN FD support makes it a tuning favorite.
The Vas 6154 is technically better but costs 10x more. VCDS is great for coding but cannot flash firmware. The SM2 Pro occupies the "Pro-sumer" sweet spot—80% of the OEM capability for 10% of the cost. scanmatik 2 pro odis