I bought my Kovea after reading HJ's blog. While I have no way to compare it to the Fire Maple, I wouldn't hesitate to buy another one and I won't hesitate to recommend it. It's small and light and folds out big.
I have no regrets. I don't look longingly at other stoves and think "what if". Off Ebay, shipped from Korea, it arrived very quickly. I did have to sign for it. Incendiary device coming from a foreign country, I guess they're cautious. Somebody here was selling them under "Gear Deals". Same price, good reputation and all. Had I known, I would have bought it from them just to keep it local so to speak. Either way you won't be disappointed.
While the Fire Maple is lighter, in reviews, it had some issues. Overall, I believe, South Korean standards of manufacture are much higher than Chinese.
That said, I see the FM on Ebay for $55, making it much more competitive. I know the Spider works though. Works the way it was planned to work with no modifications. It was thought out and I have no concerns with it's durability. You won't be disappointed