You can take a look at AMD FX-series processor (FX8120 or FX 8150) and MOBO ASUS M5A99FX PRO R2.0 or ASUS M5A97 EVO R2.0
I have also come across information that puts more emphasize on the RAM rather than the Processor. Basically, any CPU having 6 cores should be able to do the job satisfactorily for a Home Lab environment.
Yes thate right having more RAM is very impotant.