I just had to replace a laptop so I ordered up a new macbook 2.0GHz. I'm going to upgrade the ram to 2GB. I going to buy it from OWC, I'm a past customer. I can get 2 - 1GB or 1 - 2GB for $49.95. Is one option better than the other? Also I can sell my ram back that comes with the macbook for $8.00, computer is used in a business so every dollar counts. Any thoughts?