I prefer a full face, but I have never had a modular that fit me well enough to do a fair comparison. My wife wear a Shoei Neotec modular and really like it's fit and the drop down sun visor.
When looking a modular helmets the added concern is chin bar retention in an accident. The
Sharp website I mentioned in the other post tests for retention, something
no US standard looks at currently... If you look at the
test results for the Neotec it shows the chin bar remain locked 93% of the time...the older Multitech only scored a 83%. The Nolan 103 scores a 100%...at about half the cost of the Neotec. If you use the Sharp site they refer to modular helmets as "System Helmets".....