I ended up using a CNC shield with jumper wires to use the little drivers, but have added making a custom BOB for them on to the roundtuit list.

TB6600 drives are OK if you get genuine ones, and don't push them too hard by running near the maximum voltage.
The 'fake' ones, don't even use a TB6600 chip. You can usually tell the fake ones, as they have a 32x microstep setting, which the TB6600 chip isn't capable off.