After a week of using the XL pads on my daily commute I've decided that I'm switching back to stock. I'm a little bummed about it, since I like the way they look and their comfort with glasses is much improved, but the sound just isn't as engaging as it used to be. I found that some genres did improve, such as rock, jazz and electronic music, but my main genres, pop and kpop, suffered. Thanks for the experiement, Val, but you got it right the first time.
This is why I prefer the XL pads. It actually works better for the majority of the music I throw at it. Yes some music sounds better with the original pads, but on the whole, the majority of my collection (rock, funk, jazz, electroswing, swing, EDM) sounds superior to my ears with the XL pads and the added comfort is just an added plus (and a much appreciated one). I'm sure for some music I'll want to go back to stock, but for now I'm more than happy with the XL pads. It just works for my collection of music.