I thought I was doing the right thing by resurrecting a related thread for my question, but it appears now that the question wasn't clearly understood, and I'm concerned that the thread won't be revisited and therefore my clarification will remain unseen.

I'm trying to find out whether the advertised streaming of Amazon media via FlyFi performs well, with a minimum of stutter/rebuffering and good resolution. The flight's tonight (27 Feb 2016) and I need to start downloading now if performance is going to suck. I'd appreciate any experiences that can be shared.

If the equipment makes a difference, it's an A320. I don't know how (or even if it's possible) to obtain the tail number at this point.