I don't think you can get much more than value RAM with 100 bucks. That is fine if you don't plan on doing some high-end overclocking, and by the way it looks, with that motherboard you picked out, looks like you are; because that is what the motherboard is specifically made for. If you not overclocking I would go with the GA-965P-DS3, but if it's SLI your looking at, there are cheaper alternatives.
If your planning on upgrading to 2GB in the future I would recommend getting a single 1GB stick until you can buy another and dual channel them in 2GB (like what I'm doing).