Want to put my 5 cents about Clear, received mine about 2 weeks ago and there are my impressions: luckily my unit doesn't have qc issues, it has slight driver flex but nothing criminal (definitely not as mediocre as in my cra+), it only noticable when you push iem deeper inside and no flex when just put it in ear, with stock tips flex is more prominent but with tips I use (edifier tips from tws1 I guess, dont really remember) almost no flex. Comparing them with JD7, jd7 sounds much more open and brighter, however bass punch is big but not as prominent as clear's one (but difference is not drastic). If you can afford jd7, I'd recommend to go for them, better sound overall, essentially mids, but stock cable and kit is no match to what clear go with. JD7 is also easy to drive, you can use it with just your phone easily, clear is much more power hungry, you 100% need a dac to get a good sound. I mean, if u want cheap bassy iem (clear is 36$ in my local marketplace and limpid cable is 14$, lol) it's a no-brainer, I doubt Castor can compete with them really, the cable quality is top-notch plus good stock tips and carry pouch. But sadly it seems that qc is a lottery, so you have to take a risk. Cheers!
https://ibb.co/rMYJzJh