So I figured I should give some impressions:
I'm using these with the double-flanged medium tips, inverted over the ear. I've used a few in-ear buds over the years, the only "good" ones being the Shure SE115's, the Klipsch S4's, and the Etymotic HF3's, and there's just no contest. It's not just that the MG7's have excellent low-end. A lot of buds have good bass. Hell V-Moda Bass Freq (if y'all remember those things) could move air. What makes these so incredible is that even as they rattle my eardrums down to 20Hz, there's no loss in clarity in the mids or highs.
Now, I'll say that the isolation isn't the best I've heard (that'd be the Etymotics) nor are the trebles crystalline (again, Etymotic), but unless you're using these while sitting on an airport runway the former point is irrelevant, and the slightly muted trebles mean that you can listen to your music at a nice hefty volume for longer without it starting to wear on the ear.
Whenever I get headphones, I have basically three things I check on:
1) The aforementioned low extension. With this, I use Wiz Khalifa's "On My Level". Not a great song, but incredibly low bass.
2) Ambiance and soundstage. For here, it's an orchestral arrangement of the FF7 soundtrack. Shaddap.
3) Ability to keep distinct sounds even when the music is incredibly busy and fast. In this case, I used Vital Remains' "Icons of Evil".
In each case, the MG7's performed beautifully. The lows were genuinely rattling, I could hear the valves opening and closing on the woodwinds of the orchestra, and no matter how frenetic the guitars and double bass were, everything felt separate. That's an important distinction. It wasn't just that I could hear everything, but the instruments with these genuinely sound separate, like you can actually hear them as individual elements as opposed to a single unit of sound.
If there's any complaint I have, it's that the fit is VERY dicey on these things. On more than one occasion, I yawned and managed to slightly shift one earpiece enough to make the sound get blocked entirely. Not a huge deal, a quick tap fixed it, but these aren't headphones I'll be using in the gym (aside from the fact that I don't want to break really nice phones). I'll still be taking the Skullcandies to the gym.
TL;DR? I have a pair of earbuds that are good enough that I no longer feel like I'm cheating myself by not listening to music in my car. There may be better products out there for the price (I couldn't say without trying them all), but despite having paid less than $100 by purchasing them from another H-F'er, I would ABSOLUTELY have paid full.
