I was looking at these two motherboards, but can't tell if there's really a significant difference. I don't see myself using 16gb of ram within the life of this motherboard, so it's not really an issue.
http://www.newegg.com/Product/...x?Item=N82E16813128359
GIGABYTE GA-EP45-UD3R
http://www.newegg.com/Product/...x?Item=N82E16813128347
GIGABYTE GA-EP43-DS3L
http://www.newegg.com/Product/...x?Item=N82E16813128359
GIGABYTE GA-EP45-UD3R
http://www.newegg.com/Product/...x?Item=N82E16813128347
GIGABYTE GA-EP43-DS3L