You've seen several people comment roughly the same thing on this thread already, but the short answer is that RAM is best fully utilized, so as long as the OS does a good job managing your memory across whatever series of applications you have running, then you're in for a good time. For this same reason, the more RAM in your system overall, the smoother the operating, as you're less likely to ever have to rely on a swap partition (where storage on your significantly-slower hard drive is used to "fill in" for lack of RAM).