Development with Native or HTML5?Development with Native or HTML5?

Web-based UserInterface is more popular nowadays after created Hybrid application frameworks like (PhoneGap, Appcelerator) for Android&IOS. But I am hearing many companies turns back to native development environment (Xcode and Java) on them for better performance. On contrast some embedded UI frameworks like Wx, QT and GTK etc. gives better performance but needs more effort to develop a rich User Experince. I am looking for a HW and OS independent,...