I am also pleased with the Shoei multitech. I usually cannot wear Shoei because my head shape is a better match for Arai, but this particular model has worked for me.
I did not like the H/D modular at all - poor head shape fit and the air noise was much greater than with the multitech.
Because I wear a size 8-1/4 hat (65cm circumference) finding a helmet large enough to fit is a real issue. That is complicated by the fact that my head is much longer (front to back) than it is wide (side to side).
Yes, you could say that I have a big head... and a narrow mind... and you would be anatomically correct, LOL!
I spent the last several months researching helmet manufacturer's offerings for something that had a reasonable chance of fitting. Several years ago, I had tried on an Arai Profile and it fit well, but I didn't want to spend $600 for a helmet.
However, to make a very long story shorter, I finally came back to the Arai Profile. No other helmet that I could find is both available in a 65cm size *and* has the long, narrow shape that fits my head. This is not a modular. It is a full face helmet. I found a good deal on a silver Arai Profile ($472) online with a company that promised to exchange or refund if it did not fit.
This is the first helmet that I have owned since I started riding that does not make my head hurt after 30+ minutes of riding. Yeah, it's a little warmer than a half-shell or 3/4 helmet. However, I can actually wear a skullcap or dew rag under this helmet where I can't with any other helmet I've owned. In addition, I have much less wind noise as well as better protection than a half-shell or 3/4 helmet.
All-in-all, this is the right choice for me for everyday riding. We'll see what happens when I hit the road to Sturgis in August...