Having been a fan of Salesforce for years, having been instrumental in the decision of three separate companies to purchase, including my current company , I am appalled and shocked by how full of glitches and how slow Lightening is .... Most of the sales team are constantly defaulting back to Classic because Lightening simply can't perform the every day tasks with the speed and efficiency they are used to. As for reporting: I've just tried to create a very simple report for a team member in Lightening and 4 times the wheel of death appeared on the screen... then nothing. Switch to the same report in Classic, and bang, it's there in an instant. In other words, oh Salesforce developers - get your act together and produce a decent, fully working product before even considering removing technical support from Classic. Signed, Highly Frustrated of Bristol.