Used the Spiral dot tips today for 1 hour and only for blues. The SQ quality may change so these are only first impressions:
I had been using Ortofon copies and found these to be best until now.
First to note is, the Ortofon knockoffs give the best isolation with a good SQ I have tried since owning these, which is almost 2 years and 6-8 different types of tips.
Today isolation is the only characteristic that the Ortofon's have over the JVC's. The sound was clearer, instruments more separated, and more clean bass.
It as if a veil was lifted using them vs. what I was used to. The big bummer for me, is isolation is so important. I use the 334s out in public not at home. The two most often places I use them at are while watching my son's karate class where there is a lot of yelling and grunting going on (its a big class) and on a airplane where there is jet engine noise.
I think comply makes something that increase isolation but does not interfere with SQ and insertion depth? Also I wish they went in a little further into my canal too.
I will give them a good listening too with a variety of musical genres and play around with positions both in my ear and cable bending to see if I can increase the isolation.
So far, if isolation is not a major concern, these are hands down the best for comfort and SQ.