When comparing AMI DuOS vs Droid4X, the Slant community recommends Droid4X for most people. In the question“What are the best ways to run/emulate Android on a PC?” Droid4X is ranked 9th while AMI DuOS is ranked 16th. The most important reason people chose Droid4X is:
Flip easily between Windows an Android OS with ease and no performance degradation.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Runs Android Lollipop
Runs Android Lollipop, whereas most other emulators run KitKat or older. Jelly Bean version available as well.
Pro Fast
Performs significantly better than most alternatives
Pro Can run dual operating systems smoothly
Flip easily between Windows an Android OS with ease and no performance degradation.
Pro Install apps 3 ways
Drag and drop to install or use the apps store or run .apk apps directly to install.
Pro GPS simulation
Pro Remote controller options
Use your smart phone to remotely control your Droid4X games (or customize your keyboard)!
Pro Touch screen support
Very responsive touchscreen for great game play.
Pro Free
Pro Great integration with Windows + tablets
Allows for hard or virtual (screen) keyboards, customize RAM and CPU's used, window size or full screen, swipe between Windows 10 and Droid4X, and allows for 1 folder share (local or LAN) as SD
Pro Amazing graphics
Graphics are exceptional (high end games as well as low end).
Cons
Con Discontinued
AMI DuOS was officially discontinued

Con It's free now
Costs $15 (Lollipop), but a 30-day trial is available. Costs $10 for Jelly Bean version.
Con Win 10 sleep mode issues
Coming out of Windows 10 sleep mode tends to lockup this emulator. Restarting the emulator seems to be the only option (emulator appears to still be running, but the Android OS is frozen - apps/icons, menu's, google store, etc. )
Con Windows Only
Con Custom "Recommand" tab screen from homepage is useless
Gives error "The Contents is not provided in you region".
Con Gyro sensing not working
Con Pressing the Home/Back/Task-List icons may cause some lag for the emulator
Con The default home screen is not customizable
Con Buttons on the auto-hide navigation bar are too small
Con No widget support
Con Native screen auto-rotation is only for 180, no 90/-90 except for some inplay games.
Con Latest version used is Android 4.2.2
