Having had this figure for a week on my desk, I can't say enough how awesome it is. While the alt mode and transformations are close to the same, the attention to detail, the sculpt are infinitely superior to the Impossible Toys one. The white and pink bring life to the toy. The light-piping is innovatively implemented as part of the ears.

If you want a definitive Arcee, this is it. It is pricey but the toy feels like a premium toy once it's in your hands courtesy of the acute attention to detail.