The arm on the Vr6 isn't that buzzy. It just seems buzzy compared to the crazy rumbly internal shaft. It's more buzzy than the shaft, but not what I would call buzzy itself.
If you're really concerned, you could get a non dual stim Jopen. The larger ends of all of them are rumbly. The smaller ends are more buzzy, but like the arm of the Vr6, only seem really buzzy because they are in direct comparison to the other super rumbly half. If you didn't have the larger end to compare it to, they wouldn't really feel that buzzy, only a little buzzy.
Seconding Mimi, Tango, and Salsa
Ultimate Massager is rumbly.
The G4s are supposed to be rumbly. I just got one but haven't gotten to test it yet.