I have been really enjoying the Tin Audio T2 IEMs that I bought from Drop a couple of months ago. Excellent sound for $35.
I also have a pair of KZ ZSN Pros that I think are quite amazing for the $20 I spent.
Both sound better than the Shure IEMs I bought for $100 back in 2014.
I will say, though, that the Shure’s have the best fit and are the most comfortable of the IEMs I have. They just don’t sound that great.
I like to have a pair of IEMs with my light and sound machine, a pair in my car, and a pair in my office.