I have used every released build except 10049, 10122 and 10158. At first I had a virtual machine for Windows 10, got to use builds 9841-9879 on that. Then I installed it on a physical PC, used builds 9879-9926. Then I went back to the VM with builds 9926-10041. Some time after 10049 was released, I started using Windows 10 10041 on my laptop. I didn't upgrade to 10049 though, I needed Hyper-V. Then I upgraded that to 10061 and 10074. Then, for some time, I did not use Windows 10 at all. And about 2 weeks ago I installed Windows 10 on my laptop again, this time it was a dual-boot with 8.1. On that, I installed 10130, and upgraded to 10158, 10162 and 10166.