ESXi 5.1 (799733) and vCenter

Hi,

Apologies in advance for a strange question:

Which version of vCenter Server should I use for my ESXi 5.1 Build 799733 Host?

What is the most stable release?

I have noted that vCenter Server 5.1 U1 has been released about a week ago but not sure if the company would want to install something this new into the production environment.

Any help is appreciated.

Thanks

--SS