Are you sure we aren't related somehow Chris? I two just order the Lazer Monaco in white and have had it for 2 months now. I'm not sure I'm in the same "wow" category as you on this helmet but as always every users helmet experience is unique.
Here's my take. I order the MD as I was on the cusp of a MD or LG and was worried that if I went with the LG that after it broke in it would be too big. I'm still undecided if I made the right decision or not. When I first got the helmet it was very tight to put on and was uncomfortable when the chin guard was down for any length of time. It has definitely eased a bit but it is snug. The rest of the helmet feels great which makes me wonder if the LG would have been too big after it broke in. I've done some research and you can order the next size up cheek pads and that may help but of course Revzilla.com is out of stock and expexting them in the next couple of weeks. I've also taken them out and compressed them under several books and bottles of wine. That helped a bit. The fit issue I have is that it would get very uncomfortable on the top of my head after about 45 min of continuous use. I figured out that it was a pressure point that was making my head go numb there. VERY uncomfortable but only after extended wear. I also discovered that I have kind of a bony ridge across the top of my head which is probably what contributes to the pressure point. The other is that the chin guard sits very close to my chin to the point where it is touching or I just have to move it a little bit and it touches. It has gotten a bit better with break in and adjusting the helmet on my head so the my chin sits in the cut out for the chin guard opening button. I don't think I have an unusually large chin and never seemed to be an issue ever in my life. The jaw part I'm not to surprised about as I have very muscular and defined jaw bone. (must have been all the gum I chewed as a kid).
As far as the noise level goes I find it about average with earplugs. I've noticed since I've been riding with my windscreen all the way up lately it has significantly reduced the noise. For some obvious reasons.
Ok, now that it seems like I think this is the worst helmet, let me tell you it is not. It is a very fine helmet. I like Daboo researched the heck out of my next helmet and found this helmet to be an excellent value on features, design and finish, and price and that is why I chose it. The pinlock is a must if you ride in conditions where you can fog up your screen and this comes with every helmet. The photo chromatic facesheild should be standard on every helmet. You don't even no its working and that's how it should be. The weight is amazing, its lighter then my full face HJC CL16. It looks gorgeous and in the rain I've had no issues. Daboo pretty much explained all the other features very well and would concur.
Bottom line is if you find this helmet fits like it does for Chris, get it! If you find it fits like it does for me then you may want to consider another helmet. I would definitely get this helmet again if it fit me better but again that is all subjective.