Hi,
> Also, what -Z compression level equals the compression of gzip? I've
> played with -Z9, but it seems to compress better than gzip (but takes a
> bit longer).
I haven't done timing measurements but what I have noticed is that if
you use the custom format and after you try to compress the resultant
file, the size is not reduced that much, so it's not worth to spend time
compressing.
Cheers
--
Arnau