I wouldnt worry about it being refurbished, and it comes with a warranty from ikesound (6 months I believe). My way of thinking is, if nothing goes wrong in 6 months, then nothing will likely go wrong if it is properly used.
It will put out plenty of power for the type R's, and i've even heard of people running them at .5 ohms daily. I would be more worried about the Hifonics staying stable at 1 ohm than the orion, although i've seen plenty of people doing it.
in my opinion, go with the orion. it's a better quality amp that will put out just as much power as the hifonics, for $80 less. It's a win-win situation.