Hello utu!

In comparing GParted to Palimpsest, I suppose you are looking at disk partition/format capability. I haven't used Palimpsest for that, or much else, so I can't really say whether it offers much more; GParted has always served me well as a partitioning front-end. I might have a closer look at Disk Utility one of these days and report back if I find something interesting in a comparison between the two.