keyfollowing cut off

[Cochise]

I'm experimenting with a patch in which a BP filter with high resonance setting should has the cut off point exactly on the same frequency of the note played.

Which filter from the Mdular III and Flexor 1.5 stock suit better for this, in the wider octaves range?

[faxinadu]

i like cw's stock bp24r for such things, but they are all good for the job.