I live in Australia, so my favourite part supplier is Umart. Having a bit of an issue deciding between these two motherboards for my brand new Intel Core i7 3770 LGA1155 CPU 3.4Ghz 8Mb Cache Ivy Bridge!
If you want sli/xfire for future updates... I would go with some model that can do 16x/16x. There is only a feel of them, the less expensive that I know is the MSI G55! If you don't plan on going sli/xfire in the future... I would chose the SABERTOOTH =)
2. Shield protects from dust and humidity
3. I like some Asus utilities like auto-overclock for the new Z77, I don't know if it works with other manufacturers, probably not!