I stayed away from XFS because it had another bad behaviour: after a crash it will do a replay of the log and happily continue. After a couple of crashes the filesystem became so corrupted that even the replay of the log failed and fsck was useless.

I tried also the option of running fsck after every crash but this also did not help (some crashes seems to mess up the filesystem badly). At the end i stayed with JFS ( which i was also testing at that time together with Reiserfs) because it was the best balance between speed and CPU power at that time.