[U-Boot] question about selecting a stable U-Boot source code package

Hi, experts:

How to select a stable uboot source code for developing a commercial product?

There are so many official release package, such as:

u-boot-2012.04.tar.bz2

u-boot-2012.10.tar.bz2

u-boot-2013.04.tar.bz2

u-boot-2013.07.tar.bz2

...

So, how to identify which package is more stable than another package?!

For PandaBoard (TI Company):

It seems TI selected u-boot-2012.10.tar.bz2 as its code base.

Best wishes,