The iSport Victory is Monster's premium in-ear wired sports headphone. It comes in a couple of different colors and retails for around $150 in the US, £130 in the UK, and AU$229 in Australia. That's probably a little more than it should cost, but it does offer a great fit and is one of the better sounding in-ear sports headphones out there.
I'm a fan of the iSport Victory and have been using it for a while, though I'm gravitating more toward Bluetooth headphones for running and working out at the gym these days, so part of me kind of wishes this came in a wireless version.
That said, the headphone has a few things going for it. First, thanks to the included SportClip "winged stabilizers" -- those soft plastic appliances that fit into the inside of your ear -- it offers a very secure, comfortable fit and you can get a good, tight seal. As a result, bass performance is very good. Overall the Victory sounds quite good and delivers more refined sound than the earlier and less expensive iSport Immersion, which has been discontinued.
This is a pretty aggressive headphone that's definitely forward sounding with lots of bass and good detail. It's a little hyped in the bass and treble, but that's how you get the more exciting sound that many people are looking for.
Just be aware that the headphone does seal out the outside world quite well, so you may not hear cars coming if you're playing your music loud while running or riding your bike. If you're looking for more a more open design that lets some sound in, Monster makes the, and I also like Bose's $130 ear-bud style headphone.