IE 100 Pro

I bought Sennheiser Pro 100 because a lot of people talked about here and I don’t regret it at all for the price that’s really good

I use Sennheiser ie 100 pro, they are great. Very good isolation, I can be in very loud environment, and monitor at comfortable level. Also, with the hook that goes behind your ear, you can leave them hanging, and push them on much quicker than regular cans, with one hand. That means I don't need to put down the boom, and nobody is gonna scream because I'm too slow. Highly recommend. 

Ditto, I'm using them right now in a reality show, these sound great.

Sennheiser IE 600  Comfort is non-negotiable, fortunately I love the tuning but even on the IE 100 pro that I like but don't love, they still top a few other IEMs simply because I can wear them in any situation without any discomfort 

If you just want to try out the shape, the IE 100 pro is really nice too, and about half the price of the IE 200, they're my go-to cheap IEM tbh

I used Sennheiser 100 Pros for a good long while. I found them to be a step above the usual over ear headphones, but eventually went back to the over ears because they are wireless and I play more casually nowadays. The 100’s definitely weren’t cream of the crop, since they are entry level IE’s at entry level pricing. I was satisfied for the duration I used them.