It's big advantage is 6 SATA ports & dual, onboard GbE. For most people neither are that important I don't think.
Personally, I think it's very handy. I need two GbE controllers per fileserver because of the way I segment my home network. And 6 SATA ports allows me to build better, inexpensive fileservers. Of course, I won't be needing any of this for some time, which doesn't mean I don't think about how much more convenient these would have been back in the day.