Currently: Two Shark RSI's get used first. They are light, fit my LO head with zero issues and have no buffeting on my bikes.
Next up is a nice looking fancy N-102 Flip that I just don't use much. It feels like a bucket of concrete on my head after wearing the RSI.
I sold my AGV Stealth, never fit right but, it was nice and light. The head shape was very odd and it did not cut through the air on naked bikes. Lots of pull and moving around at speeds over 50 mph. Various HJC helmets that are for round heads and never performed all that well on my long oval head.. mostly off road styles, the only helmet I ever crash tested was an off road HJC, one of the pricey models too. It was being used on road with a dual sport and it did very well in the crash.
Fulmer Modus flip up, the helmet is heavy and cheap but, it fits very nice on my head. After many miles I retired it to a back up after seeing one in a crash. I would only use it if my others where all broken etc.. The hinge doesn't hold up well at all. I've only had around 8 helmets in the last 5 years..... I'm happy with the Two Shark RSI's and my current HJC off road helmet so, I won't be getting anymore till these are used up. From now on I look at head shape very close and the weight. Venting is not a huge issue for me since I ride with the shield cracked about 90% of the time. I like having a slim helmet without all the bulky weight. My only gripe about the RSI is the weak hold open on the shields. The RSI will not stay cracked open at a "brisk" speed unless you have a good size wind shield to get behind. It could really suck on a sport bike if you like to leave the shield in the vent position. They do fine at normal speeds though, I seldom get enough speed on the DR650 to shut the face shield, it only happens at interstate speeds near a truck etc..