I really like my Shoei Neotec 2...It's my third modular helmet and I can't see me ever going back to a normal full face helmet.
They are so much easier to put on and off which is a must when you wear glasses. It's also nice not having your ears nearly ripped off everytime you remove the helmet.
Another advantage of a modular helmet is you can quite often get away without removing your helmet when refuelling the bike as you can just flip it up when you go in to pay for the fuel instead of removing it.
The 1st modular I had was a cheap Rjays Tour Tech, which actually made me a fan of modular helmets. For a cheapie I actually found it quite good, the only thing missing was an internal sun visor.
I then upgraded to a Bell SRT Modular...This was a mid range helmet which had fairly good reviews so I bought one.
Unfortunately I wasn't a fan...I found it a bit noisy and the internal sun visor tint just didn't seem quite right.
After about 5 months I retired that and bought my current Shoei...
While the Shoei is an expensive helmet I believe it was money well spent as it's a well built quality helmet with an internal sun visor that is just right for my old eyes.
It's also the quietest helmet I've owned and is very comfortable.
Having the option of being able to fit an intercom without it looking like an add-on was also a bonus...
The outer shell size is also a little smaller than some helmets which makes fitting it in the ST's topbox an easy job.
The shell size is really noticeable when sitting alongside Sue's HJC modular...and unlike my Shoei, the HJC doesn't fit in the topbox...