For those with a Mid-2011 Mac Mini 2.3 ghz I5 running Mavericks (I have 8GB RAM, FWIW), how does it run compared to Mountain Lion? I've held off on upgrading because of reports of Mavericks being not as responsive as ML. Users reported seeing the beach ball more frequently than they had before upgrading. Granted, this was when the OS was first released, so perhaps it has improved since then. Basically, I don't want to upgrade from a perfectly working OS to one that is slower and not as refined, but if that is not the case, then please let me know your guys' experience so I can make an educated decision. Thanks in advance.