Of all the ear plugs on the market which do you like the best. I have a HJC IS-33 helmet and the wind noise plus riding behind Harleys in group rides is extremely annoying. I considered buying a full helmet or one that opens in front but for me it's claustrophobic. I like my helmet and don't really want to replace it.
BTW: I found a great idea for riding into the sun. My helmet has a built in sun shield or riders who ride with sun glasses. When you are riding into the sun wearing sun shades you're still riding into the sun. At Walmart, Lowes or Home Depot get a roll of 2" wide pastel duct tape and mount it on the top of your outer helmet shield. It works like the sun visor in your car. When riding in the early morning or late in the afternoon just tilt your head down a little. It really works! You can now buy duct tape in many colors to match your helmet.
BTW: I found a great idea for riding into the sun. My helmet has a built in sun shield or riders who ride with sun glasses. When you are riding into the sun wearing sun shades you're still riding into the sun. At Walmart, Lowes or Home Depot get a roll of 2" wide pastel duct tape and mount it on the top of your outer helmet shield. It works like the sun visor in your car. When riding in the early morning or late in the afternoon just tilt your head down a little. It really works! You can now buy duct tape in many colors to match your helmet.