Pros I usually am on the cardio machines in the gym, or running outside- ear buds have never been a good fit since they pop-out once I start sweating. These headphones are secure, comfortable and lightweight.
Cons Unfortunately I've gone through 3 paris of these- same problem every time- the right ear goes silent- not sure if this is due to sweat or if the connections to the speaker are poor.
Summary If you work out hard and sweat a lot- especially if you focus most of your workout on the cardio-side, these are an excellent choice. Ear buds never stayed-put...but these fit securely and comfortably. Beware though as I have never had a pair that lasted more then 6 months. Sennheiser should fix this issue!
Pros Good while they lasted.
Cons Either the right or left headphone stops working after three months usage, the wire casing falls apart making them unusable. See here: http://sites.google.com/a/empower3w.com/3w/files/headphones.jpg
Summary I have now purchased three pairs of Sennheiser sports headphones and all three have fallen apart or stopped working after no more than three month usage. The wire casing falls apart and on three headphone either the right or left headphone has stopped working. You can view how these headphones look after a few months here: http://sites.google.com/a/empower3w.com/3w/files/headphones.jpg
I have contacted Sennheiser "customer service" department on three occasions and they have never responded to my emails. Do NOT purchase.
"Very uncomfortable"on by voltaic1
Pros Sound quality seems ok and they won't fall off your head (which isn't necessarily good).
Cons They are tight and uncomfortable. They should have made these with some sort of adjustment. The pmx 70 ear buds are too big and that adds to the discomfort. An inline volume control would also be useful.
Summary The fit is very disappointing. I have worn Koss p9s without issue, but they are cheaply made and break quickly. This is my last set of pmx 70s.
Pros Good sound, Great fit, Best value on active headphones
Cons Green...Some hate, I like. There are better sounding headphones on the market, but they kill stock buds.
Summary These are pretty much identicle to the PMX 80 but have a price tag of $19.99. You cannot beat these at this price, better sound than stock buds that come with devices and great for working out. They hold tight and sound good. There is some external sound, but they are not sound cancelling headphones and you want some sound if you are outdoors running or biking. Hands down these are the BEST deal right now on active headphones.
Pros I have had a pair of Sennheiser PMX 70 Sport headphones for two years now and I have had no problems with them what so ever. They hold firm to my ears, are lightweight, sound great, and come in vibrant green and orange colors.
Cons I believe they could be a bit more comfortable with some gel like ear inserts that are softer on the ear. Also they might take some adjustment to find that "sweet spot" in your ear.
Summary After testing many different styles of headphones and earbuds I have settled on the Sennheiser PMX 70 Sport headphones. I can affirm that they won't fall out of your ears like earbuds and at the same time don't have to cover your whole ear. They are light and tend not to hurt your eardrum if properly positioned right. They sound great with a surprisingly deep bass. Overall I believe Sennheiser has found the middle ground between over the ear headphones and earbuds. I will definitely recommend this set of headphones to my family and friends.