android - Which is the best Cross-Platform Framework for mobile app development? -

hi wanna start develop cross platform application mobile app (mostly tablets/ipad). 1 best in below start :

• appcelerator
• phonegap
• xamarin
• mosync

each framework has own con's & pro's.

choosing framework purely based on selection criteria :

• availability across different platforms
• development
• speed
• ui
• performance