This was the first anime I'd ever bought, and although I wasn't too sure about it when I saw it the first time, I can honestly say it's grown on me.
Before I bought this DVD I'd been reading manga instead of watching animations, and this series was the first I read that I found an anime for. The manga was quite a lot different, because although it follows much the same plot, with main themes, it also adds a lot and takes away things the anime has. The characters also seemed a bit different, but there none the less likeable and they make the show really fun to watch.
I gotta say I liked the second set a lot more than the first one (mainly because it has more action), but you really can't buy that without getting this one, because the story evolves so much in these four episodes.
I reckon if you've never seen FMP befotre you should get something cheaper like the manga first, because you'll probably need to get both DVDs to like it, and that'll be a lot to spend, after which you may not like it... so spend less first and you may save the money you'd have spent.