Mike, I am very picky about the quality of my music having been a musician all through school and college.
I strongly suggest wired if you want quality sound. I also suggest that you will want the kind of buds that fit into your ear canal and seal similar to an ear plug. Not the type that just lay in your outer ear cavity. For comfort sake I also suggest getting one of the sets with multiple sizes of ear seals.
After trying several brand I ended up preferring a set of Sony ear buds that came with 3 different sizes of ear seals. Use the smallest size of ear seal that makes and holds a good seal for long rides. After several hours of riding you will still be comfortable versus using a larger size that will begin to become uncomfortable after an several hours.
I got mine off Amazon using the review to make my choice. All under $20 and all rated very high in the reviews. I bought three different sets, all with multiple sizes of seals, but the Sony's had the best quality of sound of the three. All three sets allowed me to listen to my music at 70mph, but still hear passing cars, horns, emergency vehicles, ETC.
Yes you can spend hundreds of dollars to get higher quality ear buds, but you will not be able to hear that extra 3-5% difference on a bike going down the road.