Remember, some of the larger motors are required to be put on speed controllers just because of the current draw.
I recall for a fact mentioning FP on Spikes in 2010, and I was imediatly rectified on that before my question on programming was answered. CIMs belong on speed controllers and probably the 775, maybe the 550, but most other motors will work fine on Spikes.
We found out the hard way that window motors under
serious load will work best on Victors.
Hope it helps!