I've never tried that straightener before personally, as well as I've never heard of it.
As for cheap flat irons, I've had a Conair and I currently have a Jilbere. The Conair ones never worked too well for me, and the Jilbere one is pretty decent. Not as great as a Chi, Sedu or Maxiglide... I think how well it would work depends on how thick and coarse, or even wavy/curly your hair.