I went for the Moto Pro ultra max (27db) expecting that the large would fit perfectly. I usually use 33db foamies and find them the best, but they deaden all sound, and sometimes make hearing the intercoms at high speed difficult.
Now, with every earplug, seating in the ear is critical. Any creases, folds or gaps, no matter how tiny, will render them as good as useless. I have a bike with a screen and the wind noise is horrendous. With foamies seated correctly, it makes the ride tolerable. When I tried these Moto Pros, I was initially dubious as I still could hear sounds when they were inserted, but amazingly they worked. Wind noise wasn't completely eliminated, but the thudding resonance was and I was amazed by that. I could also hear music/intercoms more clearly.
For some people on bikes with screens and fairings, your mileage will vary, but on naked bikes, this is where the Earpeace's are almost miraculous (27db version) - all windnoise disappears on 'clean' bikes.
I'm glad that they sent two different sized sets in the order, as in the end, the mediums worked better for me.
They're expensive, but if they work...
