Hi,
What are the specs of your stepper motors.
4988 and 8825 are both MOSFET outputs, the 298 is a bipolar transistors.
MOSFETs have a very low ON resistance, so they dissipate very little heat, compared to the 298 that drops up to 2V across it and needs a heatsink.
The MOSFET drivers are way more efficient.
the a4988 has on board microstepping selection.
drv8825 has microstepping ability too.
Tom.... 