I just moved over to Android with the Galaxy Note2 after being a Windows user for the past 10-15 years. I'm a Sprint User so I really didn't have a choice. I really like the device but could do without the OS. Jelly Beam is a very smooth OS. I have downloaded and installed a number of apps and have not seen one bit of lag compared to the day I bought it. I'm still not fond of how the OS allows the apps and such are laid out and the limited number of ways you area able to organized your apps for use. I got use, over the years, of running my PDA(smartphone) the same way as I do my computer and then really loved how WP7 allowed us to have the apps we use most on the front screen and simply scroll up through them. If Android ever develops the ability to run with Live tiles in the same or similar manner as Windows does, WP will be in trouble. One thing I do really like about Android is it's ability to files back and forth between my phone and computer. After loosing that ability with WP's OS, I really missed how easy it was. I hated having to run everything through Zune or upload it "To The Clouds" in order to have it available on my Phone. Finally, for me anyway, the decision to go with the Note2 was the simple fact that, like the previous reason for hating the deal with the Cloud for moving items onto my phone, I really missed Stylus input. The stylus' they have out there for these touch screens are horrible at best. The stylus designed for use by Samsung on their Note devices are absolutely fantastic and what should have been the natural progression from the old PDA's instead of just doing away with them. Until now, I really missed being able to jot down a note on my PDA. For years, I always had to carry my phone with me and my PDA until I finally converged with a Touch Pro2. I stayed with that until I was forced to move onto the Arrive when the TP2 stopped working well. I was then forced to go back to carrying two thing again. My Phone and a low tech not pad and erasable pen. Now, with my Note2, I have gone back to just carrying my phone with me again. I do still miss Windows though and hope, in the coming years, they develop better devices that will actually be able to compete seriously with the other OS's out there.