I would recommend over the ear headphones over buds or headphones. The over the head strap on those skullcandies will probably drive you crazy if you have a helmet pushing down on it.
I personally hate buds and can't stand the feel of something crammed in my ear. A lot of buds will just fall out too so if you were to go with buds I would get the ones that you have to cram in your ear and they have good suction. such as this type: CLICKY CLICKY
But like I said I can't stand the feel of those and they block out all the outside sound which I hate. I want to be able to hear what my friends are yelling at me or when people are coming up behind me so I don't cut them off.
So I go with these when snowboarding: Koss KSC75
Check out the reviews on them. They have great sound quality for what they are, bigger speaker then any bud will have, and they are very light. I have used them snowboarding and jumping bmx bikes and they have never fallen off once. I used to wear them under my full face bmx helmet and they were very comfortable. Not sure how they would fit in a snowboard helmet since there is usually more padding in them to keep the cold out. After 5 minutes of wearing them you won't even notice they are on your ears. They are very cheap on eBay (can be had for around $20) and I usually have 2-3 pairs laying around for backups. I recommend you give them a try. Well worth the money!
If you don't think those will suit your needs I would check out some other higher quality over the ear headphones. I love over the ear headphones because I find them to stay on the best and they are the most comfortable.
Oh and like others have said.. Skullcandy headphones are know to have horrible sound quality. I have never tried them out myself though. If you want an over the head headphone design check out Sennheiser products cause they kick ass in the sound quality department. I own a pair of Sennheiser HD595 and they sound like heaven. However they are obviously not going to be good for snowboarding. I wouldn't go with the Sennhesier OMX 52 over the ear headphones though. The Koss KSC75s have much better reviews and sound quality compared to them.
Oh and be careful with buyin Sennheiser CX-300s on eBay. There have been a lot of fake ones going around. Just google fake Sennheiser CX-300s and you will find lots of info on the subject.