Bought a pair of KOSS spark plug at Sam's in Toronto (when it still existed) for $13. Loved them dearly! Worked a treat on planes.

Before I knew that you could get exchangeable foam bud for them mine got really yucky) I picked up a set of Shure E2C and loved them. Now the E2C doesn't fit anymore regardless of tip size and the foam one is uncomfortable so was given a sennheiser set (can't remember model) from a sound engineer. They were waaaaaaay too boomy in the base for my taste (which strangely enough is what some have said about the Koss) So when I found a new pair of Koss I was a happy bunny. Then got the dogtag style Jabra Bluetooth dongle I plug them in to and stream music through them perfectly.

However, going back to Canada now, the top of my list is to get a pair of iKoss for the iphone to plug straight in. As much as I love the jabra dongle, running on bluetooth drains the battery and I have a tendency to forget the dongle charger.

The koss ones are super comfortable and also act as normal earplugs when needed. Now that you can get more buds for them I now have two sets. Yay!