Yeah, I did see that too. I am not familiar with how important that is. I wasn’t sure if you ever run on anything other than full speed? If that is not the case, then it seems the DeWalt would be better.
There you go. A SuperPID is close to $200 with shipping. A dewalt router is around $100. Having speed control down to 5000 rpm with closed loop control is definitely worth the extra $100 op.
If cost is ok personally I am moving into a water cooled spindle with VFD $200 for the spindle and controller a bit more for the hoses and liquid containment but it can be as easy as a 5 gallon bucket or complex as a pc cooling system with radiator… the noise level alone is worth the money to me. 8000-24,000 on the speed as well.
Just make sure the gantry can handle the weight of your “real” spindle. I strongly recommend you consider doing one of the stiffening mods before you install it if it weighs any more than the Dewalt.