Upgrade to Mavericks? X
From mid-2011, my Intel iMac with Mac OS X v10.8.5 _&_ with 4 GB of RAM runs well. So I feel prepared to Wait to get Mavericks.
I'll Wait until I break-down & buy a new iMac, maybe in a year or more from today? A new iMac comes with Mavericks installed, already. I invite your opinions! :-)
P. S. One feature of my current iMac that I don't like is this: "This darned iMac _scrolls_ rapidly but-briefly, all on its own. I don't need to Touch its mouse. Zip!" (I don't need to be on-line.) I use a Magic Mouse from Apple, maybe Overly Magic? Thank you.
iMac, OS X Mountain Lion (10.8.5), 2.5 GHz Intel Core I5 P. & 4 GB M.