I own one of those chairs.
DISADVANTAGES:
1. The fabric is a bit on the cheapo side and will start to accumulate lint balls.
2. The clips that secure the seat cover to the chair pops out on occasion
3. The rocker will come apart from too much weight or plopping down on it too hard.
4. Rock to far back and you fall backwards. (might be an advantage for some)
What I did to mod the chair:
1. Added foam padding to the seat bottom and back. (Much better feel)
2. Used a full automotive seat cover
3. Used ratcheting tie downs to keep the rockers from popping apart. (This works very very well)
Overall the chair is unique, it keeps you erect even when rocking back and forth. (this might be an annoying feeling to some) After the mods I did, I have not had one issue with the rocker. My nephews love it. However, nothing compares to a nice comfy couch or Lazy Boy recliner.
I purchased mine when it was around 79.00 and because of the lower price, I think I will get another one.