I use the Sony Mdr-As20J headphones like this

http://www.amazon.com/Sony-Mdr-As20J...xp_grid_pt_2_2


The helmet strap adds to keeping them down and I use them even at work and they never slip out.

 

there are only 7000 Sennheisser models, which ones do you recommend and why?

 

Noise-canceling buds work well

 

HIGHLY recommend these molded earphones. Use them on my bike and can hear near perfect.

http://www.earfuze.com/index.html

I do wear a full helmet though.

 

Shure e2c for me. No helmet. They are in-ear and block out wind noise and such but you can still hear your bike and what is going on around you. They fit perfectly. They can be had for $50 or $60 bucks now that they are an older model.

 

I have Shure earbuds that I use with my iphone. They work great when on the bike or when I am mowing the yard. I love mine!

 

I know this is an old topic, but Bose has just come out with IE2 in ear buds. They have a little plastic clip that uses the ear's natural curve to hold them in. I have been debating about getting them. They can be bought for $99, Best Buy, ebay etc.

 

I've got these, block out wind noise and don't fall off :-)

KOSS KSC75

 

I use Westone True-Fit earphones, they isolate noise and allow you to hear the music. You can also get them with custom fit earmolds. Altough they are not cheap, the sound is absolutely incredible. They can also be worn under a full face hemet without any issues. I use them on a daily basis and have the same pair for almost 3 years with zero problems.

 

I like these because of the wireless aspect. I have no issues with them coming out likely because there is no long wires connect to anything and the range on these are great. Not sure about the battery life because the longest I used them in one sitting on the bike was 4hrs. One thing I don't like is the tiny volume control but small price to pay for the all the other features I love about this set

http://www.radioshack.com/product/index.jsp?productId=3933229&CAWELAID=466080993