Runtime - Web AS ABAP vs Java for UI5 applications

Hello all,
We are going to develope a new solution based on the SAP UI5 on the SAP backend -7.31,SAP portal 7.31.
I need the recomendation on the Runtime for depploying/running of the SAP UI5 applications which are build on Eclipse Juno & sap NW gateway .
We have both environments ready for the deploying the UI5 applications but which is best runtime interms of performance,integration to portal,integration with SAP backend where we are developingall the Business logic .
How can we do the life cycle managment of the SAP UI5 applications (Code verstioning ,transports across system ..etc) .Right now i can see that it is like a PAR file development i.e. without any source code versioning facility ..
Please provide your recommendations .
Regards,
Govindu

This discussion thread belongs to the UI Development Toolkit for HTML5 Developer Center space. To meet all of your requirements, I would suggest you use AS ABAP for SAPUI5 development.

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