We are about to purchase a Teradek 605 and decided specifically to spend the money on the basis that it's very stable. We simply don't want any problems during a competition, as ice time is tight and we need to keep to our schedule.
We talked to a counterpart in perth Australia, and they bought a no-name ebay device. It works, but they have had a few problems. It was about $400 AUD instead of $2500 AUD for a teradek 605 though.
I'm on the understanding that a major upgrade for IJS will be ready some time next year and have been wanting more information if this may change streaming requirements!