I think it depends how you buy your IEMs right?
When I'm looking for something new I'm looking for something that actually has physical hardware differences.
My first pair was just a good all rounder, a nice baseline and a huge upgrade from anything else I had at the time.
My second pair had bone conduction drivers which immensely improves the low end.
While testing that bone conduction set I also got to try out some of the 64 audios with Apex porting. They're so comfortable to listen to. They're significantly more expensive but I would still consider them noticeably better.
On the flip side I also got to try the Sennheiser IE900s at the same time and I think they're absolutely garbage for the price.
It's mostly gonna be down to personal preference but if you keep buying IEMs that are essentially the same thing repackaged a new way, sets that aren't doing anything drastically new or different, the fall off is probably going to be closer to $300-400.
akimboprime
