I've returned other precision cookers because they had "curling-iron" style clamps that didn't work for me, and made horrendous gurgling noises. This was very quiet and did the job nicely, plus it was less expensive and came with the bags and pump!
The only thing I don't like about this (and most others) is that it turns off completely when done. I'd prefer it switch to 130ºF and keep holding, as most foods handle that perfectly and going below 130ºF means bacteria can grow again. Again, though, other brands also do this.