It's four/five-click capability is a plus.
IFO handling is superb.
Out of the 50 or so DVD titles I own, there are only a few badly mastered titles that need a little playing before I can rip using a tray-filter daemon. Tomb Raider, Pulp Fiction and Pitch Black were pigs and Greek Wedding was a dog. Got 'em in the end though.
Some ripping apps don't get the size right and CloneDVD sits quite dumb on the write screen before you realise what's happening. This'll be fixed.
The CloneDVD VOB rips play in PowerDVD and WinDVD alike. Some other apps do something wrong and the VOBs are unplayable.
It has the easiest main movie, ID-feature I've seen. Some apps have you swimming in BUPs, IFOs and VOBs for hours.
Audio and other stream selection is dead-easy.
What you pick gets fitted onto a 4.377 GB disc. Pick just the main movie and AC3 over DTS and picture quality is superb. Pick too much and quality suffers somewhere. Where possible, I pick the main movie and DTS - haven't been disappointed yet!
Picking too much is a problem - it's just silly to clone an entire 5-9GB disc, or even larger!