I ordered the Hype 10 over the Monarch MK3. It was a tough decision, especially not being able to use my ears to compare, It made my decision extra tough being the Hype 10 has only a couple of written reviews and YouTube reviews, and a couple of YouTube sound demos. (taken with a grain of salt) I also took into the fact my preferences and the iems I currently own. I own a set of MEST MKII customs and a set of 64 Audio a12s. For strict music listening I prefer a V shape, honestly the mest has been my favorite iem ever purchased. In short, they are so fun to listen to, even with poorly mixed/mastered music they seem to shine. I've also heard great things about the Monarch mk3, seems they perform very well. Listening to sound demos they tend to be a bit shouty, at least to my ears and taste, and a bit tad heavy in the mid-presence area, around 4-6k (maybe) the mest don't have this, seems the hype 10 doesn't either, looking at the graph and the youtube demos I've heard. I also listen to heavy rock, metal, pop, blues. Seems the Hype 10 would lend its self better here. Lastly I spoke to a ThieAudio Rep, after giving them my tuning preferences and style of music they also recommended the Hype 10 over the Monarch mk3. This was their response:
"Based on your description of enjoying a fun and engaging listening experience, the Hype 10 may indeed be a great choice for you. Its lively and dynamic sound profile, with a focus on impactful bass and energetic presentation, would complement heavier guitar and drum-focused music genres like rock, pop, and blues.
On the other hand, the Monarch MKIII is known for its tonal accuracy and balanced sound signature, which may be more suitable for lighter music genres such as jazz and classical."
Well, lets hope they work well for me, It'll probably be 5-7 weeks before I receive them. I'll make sure to add my thoughts and compare. Cheers!