I tried looking at the difference, the main ones seem to be 4 supports more subdirectories in a file, supports larger files, has delayed write which I don't prefer as I don't want data loss. I also see timestamps are more accurate but it also mentions there is no support in glibc so no apps would use it. Also I just need it ot be as accurate as NTFS, I don't need anything more accurate.
I'm thinking I should go with ext3 because its more likely to be more stable. What should I look at when choosing between the two?