I bought a Samsung Galaxy Tab 4 on Saturday 12/20/14. This is my first android device. I've had iPhone 4s and an iPad 2 before.
My first impression of it is poor. So far, the worst is the cpu speed. The games I play, I've never had a problem with either the Apple devices, but these run in jerky motions a lot of the time on the Tab 4. I've installed a cleaner, and an anti-virus.