Check out the SMC 11 3/5" Perforated Tent Stake: http://www.smcgear.net/smc-products?page=shop.product_details&flypage=garden_flypage.tpl&product_id=576&category_id=185
Just like the MSR stake pictured above, but longer, so it may give a better anchor in sand/snow. I'll be trying them out in sand this summer on kayaking trips.
Just an fyi, I was never too impressed with the 9.5" SMC Perforated Tent Stake in terms of their holding power in snow or sand, so I'm hoping the 11 3/4" will make a difference.
Now, the similar MSR stake is much more expensive and the reason why is that it is made from the much more durable and stronger and expensive 7000 series aluminum as the MSR video says.
For the ultimate snow/sand hold from a commercially made tent stake that I've seen, check these out: http://www.moontrail.com/tents/hilleberg-snowpegs-x6.php These things are about 3" wide and 12" long–that's some serious holding power. I've seen 'em. They are not well known. Very expensive and not particularly light.