Spiderless designs are not new. Despite all the fancy sounding tech and talk of "low distortion", its still an 8" sub with 8mm of xmax. Hardly groundbreaking.
Don't want to sound like I'm bashing it, but I'll take two longer stroke 8s from JBL or Infinity, for the same price. If you're cramped for space, there are other shallow subs as well to choose from.