I've been wearing an HJC IS-16 since I started riding. I think it's an amazing helmet/value, but unfortunately the HJC shape doesn't fit my head right (didn't realize it until I hit 100+ on this bike and my helmet almost got sucked off my head). I'd buy another one in a second if that wasn't the case.
I bought a Shoei RF1200 - I love everything about the helmet- except that sound really resonates inside making everything (talking, wind, etc) too loud for me to tolerate.
Shoe GT Air is my second choice - it has more plush padding than the RF1200 so I thought it would be warmer, but the padding should damp sound/vibration a little more. Plus I really miss having the internal flip-down visor.
I was hoping to find a bunch of helmet options to choose from, but what I've learned is that the selection is really limited to what helmet SHAPE fits your head - for example, HJC is too round for me, AGV is too narrow/oval, Shoei is just right). I've also learned that most shops/employees don't really understand helmet fitting, particularly when it comes to shape (round vs oval) and fitting options (changing liners, cheek pads, etc).