Thanks Spiral - how reliable is bzip2?
I did a quick test:
Database Size 788.9 MB
Gzip took 1 minute = 249.3 MB
Bzip2 tool 2 minutes = 185.8 MB
That's a saving of 63.5 MB
And over a 30 day period it would save almost 2GB! (1905 MB) (total 5.5GB instead of 7.5GB)
They both take about a minute to unzip.
I think with that I'll go with the full daily back-ups per month