I stopped updating my 2010 MacBook Pro at OS 10.9 because I was afraid a newer OS could slow down the computer. I am still happy with this computer and want to keep using it until it dies. It's a 2.53 GHz i5 processor with 8 GB RAM. But now I start having trouble with Google Chrome. I find mixed information on the web on whether the latest version still supports OS 10.9. That's why the OS update question is arising again. What would you guys recommend? Should I update my OS? If yes, should I update to the latest OS or should I rather try and install an older one like Yosemite or El Capitan (if this is possible at all)?