Below are the main difference for T, Y, S and N series drivers:

Series Series T Series Y Series S Series N
Product Levels High-performance High cost performance Standard DIY hobbyist
The Components Used in Driver World's top brands World's top brands Chinese top brands Chinese top brands
Manufacturer Produced by Chinese TOP1 stepper driver manufacturer Produced by Chinese TOP3 stepper driver manufacturer Produced by Chinese TOP5 stepper driver manufacturer Produced by Chinese TOP10 stepper driver manufacturer
Stability Super High Stability Super High Stability High Stability High Stability
Performance Highly optimized for medium-high speed Balanced performance Balanced performance Highly optimized for low speed
Product Feature Featured products Featured products Discontinued Discontinued