I want to start working with Geodatabase [replicas](http://resources.arcgis.com/en/help/main/10.1/index.html#//003n000000v1000000). What version of SQL Express 2014 
should I download, at the [sample at ESRI Help](http://resources.arcgis.com/en/help/main/10.1/index.html#//018t00000010000000) it is 2008R2, at Microsoft site there is the flowing options -
![SQL express versions](https://i.stack.imgur.com/rxrhL.png)

What is the most appropriate version for 2 GB geodatabse created at version 10.1 ?