Is BE 2012 with SP3 now stable & efficient in general ? Feedback needed please

Hello,

I am currently using BE 2010 R3 SP4, with HP LTO5 & remote agents for Windows 2003/2008 and VSphere 4.1 with NBD transport

I would like to know if it is now worth upgrading to BE 2012 SP3 or wait for a next major release ? I remember there had been many problems with reliability, speed, performance at the launch of BE 2012.

So I would be glad to have your feedback about it please

Thanks