Here is my experience.
I have been playing for 40+ years.
My son has been using some custom molded Alclair's.
I decided to get fit for custom molded Alclair's.
Tone & Feel mean EVERYTHING to me.
I spent about $600 trying to get something good.
I had no other reference to any in ears.
I thought the Alclair's would be great.
After using them for about 6 weeks I was not impressed, giving full time to get use to them.
Someone mentioned the KZ-ZS10's for $47.
I thought they had to suck for such a low price.
BOY was I WRONG!!!
I absolutely LOVE the KZ ZS 10 Pro's!
I will never put the Alclair's back in my ears. They sound like absolute crap compared to the KZ ZS 10's.
I also added Comply memory foam ear tips for maximum comfort and isolation. Great product!
I will put the links below if you want to check them out. Now everyone in our band is using these and are very happy.
Amazon product ASIN B07QKYTGH9
Amazon product ASIN B07RQ77BLM
Amazon product ASIN B002DY92UA
I hope this information and my real world experience can help you.