We've deployed almost thirty RB1000 because of their low cost for edge firewalls; replacing Cisco PIX and Watchguard Firebox. They are a great unit, but designed to be inexpensive yet powerful. I think adding redundant power would greatly increase their cost.
For larger systems we've been using Dell or HP servers and getting onsite 4hr hardware support. We've had great success with HP DL140, Dell PE860's and R200's (although none have redundant supplies). We use the PE860's and R200's, because we have hundreds deployed in non-routing functions; so we have many spares available. I can verify that a Dell PowerEdge 2950 runs ROS nicely and they do have redundant power supplies. An eqivalent from HP would be a DL380; but we haven't tried ROS on a DL380 as of yet.
For the noc. I have had success with hp dl380 3.6g xeon on ebay w 2x power and. 2g ram for$400