Hi all. I currently use a MBP which is soon to celebrate its 4th birthday. I was hanging on to see what goodies the new releases had but in all honesty, the retina display isn't enough to tempt me to buy the new version.. So, I'm looking to buy a standard 15in mbp but really wanted to upgrade the ram and drive. could anyone point me in the right directions (links very welcome) to sources in the uk for both ram (can I upgrade to 16gb max?) and SSD, maybe a 512gb. I think the standard machine with Ethernet and optical, complete with this upgrade would be just fine for my needs . thanks in advance.