Most stable 7.1 official build?

Hi there!

I am wondering what is the most stable build of 7.1?

I currently have bundle 2910 7.1.0.1083 but my device is informing me that there is now a 2994 bundle available for download. What changes were made in 2994 and is it stable, good battery life etc? and any known problems?

Any info would be helpful, thanks!

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