My customers are all asking if they should upgrade to Windows 10. I've kept them at Windows 7, successfully avoiding Windows 8, just like I kept them off Vista to high praise. In general I think it's a bad idea to jump on the operating band wagon too early because no one knows what's going to happen when the new code hits.
Any opinions about this? Are there dramatic advantages to Windows 10? What will it do to performance? To system security? Will they have basically the same interface as Windows 7?