I just ordered my first Macbook Pro, it's a new late-2011 15" model. 2.4GHz quad-core Intel i7 4 GB RAM 750GB 7200 RPM HDD AMD Radeon HD 6770M with 1GB GDDR5 15" High-res anti-glare screen It should be delivered by the end of this coming week and I'm quite excited for it. However, I'd like to go on and upgrade to 8GB of RAM when I get it. Could someone recommend a RAM model to me? I'm looking for quality, but at a reasonable price tag. Thanks.