Have anyone upgraded OS from Lion to El Capitan? My iMac needs an upgrade as most internet browsers don't work well nor these video conferencing applications such as Zoom or Microsoft Teams don't have options for even installation. I seem just to have new enough 2007 make and am up for it but I thought I would ask your review. I use Adobe and Microsoft applications and Mac AutoCAD right now. I will check the software compatibility for all. Thanks for your input in advance.