RavenLunaStitch is a lovely handle (username). I agree the 99 and my 185J is not the calming soft click clack of a treadle or 127 shuttle or a 201. I like the 99 (named jellybean) - but totally 'get' what you mean!!! Never had a 66 - sure wonder they sound like. And my 15s are in the middle on my sensitive sound radar.