I run Logic 9 on a mid 2010 iMac w/ the standard 4 GB of RAM. I use an increasing amount of 3rd party plug ins and virtual instruments and have gotten more spinning colored wheels and crashes of late. Therefore, I'm thinking of upgrading the memory. My question is, whether to go from 4 GB to 8 GB, or from 4 to 16. Wondering if anyone has any opinions based on experience. Some of the plugs/instruments I use are native, but I also have UAD Apollo and Satellite duos which helps. lessen the load.