Ah, if your memory usage is always over 90%, you could probably use more RAM. If it's over the top and you've started swapping, you _definitely_ need more RAM (and that's probably the reason why the machine is so slow). You can check if you're swapping by running the "Activity Monitor" (which can normally be found by going to the Utilities folder in the Activities folder in the finder). When the Activity Monitor window comes up, click on the "Memory" tab, and look at the bottom of the window; there should be a "Memory Pressure" graph at the bottom, with some statistics on both sides. At the bottom left is "Swap Used"; if that number is above 0, you'll get a fairly noticeable speedup by adding more RAM.[/QUOTE
Patron22 beat me to it! Skip the RAM upgrade and get the fattest SSD you can manage. Not only will every penny of your upgrade go toward accelerating your performance but you will also have investment insurance. Most of us expect that you will be ecstatic about the performance of your enhanced MacBook Pro. Even if you aren't, your SSD can be transferred to another computer if you decide to upgrade.
I like the idea of transferring one day, so I think I will indeed put in a big SSD. Thanks for the suggestions!
I still want to see the next new Mini, which is almost certainly coming.