I dont know if you are set on using Windows, but I made the switch from WHS to Unraid and could not be happier. Unraid was free for the first 3 disks so I was able to try it and fell in love so much that I upgrade to Pro.
I have both setups still running, but the WHS box has been relegated to only do backups and nothing else. Unraid has given me no problems and I had the thing running in less than 15 minutes and has been rock solid stable ever since. WHS for me was very unstable and had all types of problems, I built a new setup and installed my WHS disk onto it and had even worse problems than my original rig. So thank god I tried Unraid, mostly because it was free and I had nothing to lose.