Im a bit of an OS enthusiast, and check out pretty much everything to some degree or another, but I must admit to being seriously underwhelmed by Haiku. I honestly think all 3 "NG" amiga based oses are more impressive. I dont say this as an amiga fan either, but rather from the position of someone who's simply interested in OSes. On paper it (Haiku) has an ok feature set, but in practice many of those features are the parallel of a paper release. None of the NG amiga OSes have MP for example, yet all 3 are at least as stable as Haiku.
To me it appears Haiku has only gotten the attention it received due to Google summer of code giving it publicity, not on the strength of the OS itself. This isnt to say I dislike it as such, but it's not something Id try to use as a productive system, it's simply too immature.
