Great service, wish they had LS2 helmets in their database.
Lid picker helped me learn what helmets are most likely to fit me.
Due to my long oval head, there are only a few helmets that work well for me.
However, I was disappointed by the lack of coverage of LS2 helmets in particular, since this brand appears to have a few models that work for long ovals like me.
I also suspect that another datapoint that needs to be considered is cheekbone width or something along those lines after some experiences with an HJC RPHA 90s. They categorize it as round-ish. Revzilla categorizes it as long oval. While it does not fit me (confirming that revzilla's rating does not capture my fit) I suspect this helmet, strangely would fit rounder heads or long oval but narrow cheekbone heads, but not long oval, wide cheekbones, like me.
Since this service is most likely to be used by people who have trouble finding helmets, I can't overstate the value of emphasizing that they should have as much data as possible for models and brands at the outer edges of the bell curve.
In the end, even with the available data, I was able to learn a lot about what works for me and, for now, I have postponed my purchase decision until I can try a neotec II in person, which is probably the *only* modular that might fit me.