Difference between these 2 mobos?

Anyone know what is the difference between these two?

http://www.newegg.com/Product/Product.aspx?Item=N82E16813130234%26Tpk=MSI%20G31TM-P21

http://www.newegg.com/Product/Product.aspx?Item=N82E16813128357%26Tpk=gigabyte%20g31m-es2l

Difference between these 2 mobos?
http://www.newegg.com/Product/Product.aspx?Item=N82E16813130234this one has more memory capacity; but it won't matter 'cause I don't really know of anyone using 4GB DIMMsDifference between these 2 mobos?
I would get the Gigabyte for several reasons.1. you only need 4 GB of RAM, so just get 2x 2 GB2. It has an extra PCI-E slot, which can be used for many new add-ons now a days3. Every MSI product I have bought or seen bought has always had flaws. For instance a friend bought this motherboard . It had over the top IOH temps. That makes it pretty hard to overclock a i7 920. I just prefer Gigabyte products. This may not be a valid reason for you, but it changes my judgement over the two boards.
Thanks for the information, I wasn't too sure if they were much different. I'll probably go with the Gigabyte as I haven't ever bought a MSI.