Using these boards to drive a small homemade 3 axis mill for wood carving, and they worked out great. Really like the Uno mount that is included, as it makes mounting simple.
I do wish the A4988 boards had a larger heatsink, but as I am not driving them very hard, they work okay and if necessary I will add a fan.
It works well, however this model strayed a little from the original Open Hardward design and adds a fuse to the board, soldered into place.
The fuse is fine, but is not replaceable. Solution, de-solder it and add a jumper wire in place (like the original design). It's not a big deal, if you don't know how to solder/de-solder you have no business playing with electronics....
I bought this because it came with the drivers and a mount for the arduino as well as the connector pins.. I haven't been able to use it yet, but it appears to be quality.