I really can't understand bitching about memory in this day and age. First thing I do when getting a new machine is to max out the RAM. My Mac Pro has had 32 GB since 2008, iMac all have 16 GB and Macbooks 8 GB. It's such a cheap thing to do and it improves your daily life so much, it's essentially free in the end.
My MacBook Pro maxes out at 16Gb. Putting that much in would have cost me 4-5x as much as going for 8Gb! RAM is cheap, but there's a definite sweet spot much of the time.
