Q. Which one better IMT transmission and AMT - Tiago?

If we talk about AMT, here you need not to shift the gears. Gear shift take place according to the set and range of rpms. On the other hand, in iMT, there is no clutch like ATM but you need to shift gears manually. So, if you often tackle heavy traffic and drive in city only, AMT would be a great pick. iMT would provide better performance at hilly terrains and highways nad high speed overtaking. So, selecting one will depend on your requirements.