A4988 driver - Pololu vs chinese replica - Motor controllers/drivers and motors - Pololu Forum
Pololu DRV8825 Stepper Motor Driver Carrier - High Current (Header Pins Soldered)
5x DRV8825 Stepper Motor Driver Module with Heat Sink - for CNC Shields, RAMPS 1.4, 3D Printer, Prusa Mendel : Amazon.co.uk: Business, Industry & Science
Pololu DRV8825 Stepper Motor Driver Carrier - High Current