I ordered four bags and got four sets of earbuds. J4M, 2 J5s, and a J6. I gave away two, and have been using the J5 and J6 for casual music /podcast listening on my phone and computer. I definitely prefer the sound of the J6. I've been walking while listening to the J5s, and unfortunately the shape really makes them pick up a whistling wind noise that's pretty annoying. I've only used the J6 at work so far, but it seems to be the same shape and would likely have the same issue.
I guess it's not really fair to put these up against my UM Westones, eh? Someday I hope to own a truly special set of earbuds, with audiologist custom molded ear pieces and all.