I use both methods- AIVS No. 15, plus lab water on an old VPI using MoFi
brush/pads, then into ultrasonic (I have the AD, which I bought just as the
KL was announced). I buy mostly used, older vinyl and have found that the
enzyme/agitation/lab water is necessary for records that have been
'handled' for 40 or 50 years. So, what started as a 'man, this is easy'
revelation when I first got an ultrasonic cleaner has now turned into an
even more involved, time consuming cleaning process, but my records
seem to be really clean, no static, no residue (following others, I've reduced
the amount of surfactant in the AD). I have a pretty good work flow, and
while one is in the US, I'm 'pre-cleaning' a couple more. I try to do 'batches'
of records, so i'm not constantly interrupting my listening to do record
cleaning.