android development using web technologies

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Hi every one
I have developed android apps using mono framework with C#(xamarin IDE) and of course java(Eclipse IDE) language, but I want to develop more beautiful apps , I searched on internet, and I saw some apps which was developed using flex, but I did not want good tutorial on flex using flash builder.
and then I switched to developing using web technologies. I found http://www.sencha.com/[^] and http://phonegap.com/[^] and http://cordova.apache.org/[^] .
I am totally confused about them, which one is better for making dynamic apps and also beautiful apps with some databases and ... (I mean a complete app). and of course their documentation is important for me. which one is better to use?
any help would be appreciated

tnx in advance