Hi we have been Mac users for 13 years. I am the it(no education) manager for a catering company. We mainly use our 2009 iMac for contracts, inventory, and personal use since it's a home based business. Our current mac is used by 3 people. So here's my issue are business is expanding rapidly thus causing the iMac to slow down considerably. We need more memory what do we looked at upgrading internal memory but there are none for the iMac. So what would you suggest? An new Mac, extended hard drive and RAID it to the current computer.