Crucial is extremely reliable. I love Corsair and Patriot as well. Mushkin...... Nope. Kingston, yes, but not as fancy
If you're in for gaming, feel free to grab some lower latency Ram. 7-7-7-20 is pretty good.
First off I'm going to need the timings and voltage for your own current RAM, because you can only have a set of similar latencies and voltages.
I'm currently running a set of these: http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=5546849&CatId=4524
and I plan to get another set to up to 8gb. They work perfectly, love them.