High density virtual machine hosting in a 2u form factor, and with lots of head room to add CPU and RAM. Enterprise iDRAC was icing on the cake. Dell makes firmware updates super easy, just use Dell Repository Manager and follow the instructions, add the bootable ISO option when you start it up, download the patches, make a USB stick or go old skool and burn a disc, boot it and sit back while it updates everything. If you want an all rounder then yeah a. R710 or R720 is the way to go, but for my needs/wants, the R815 is hard to beat.