I've received the ZMF-modded MH1, although it's little late. Love that build quality because it looks like a home-made IEM with lovely sound. Because the vents are closed, I have to agree that it's less boomy and overall sound became very bright. It reminds me of that horrifying XBA-30's piercing and peaky treble; but it's not like that. The upper treble is pleasant like Yamaha EPH-100. However, the MH1 lacks of L and R marking so I painted them with red and blue, making 'em look sexier. Clipper were put because the cable slightly heavy for my taste.
Those look awesome. I like the red/blue touch.