[Kasper]

I cast my vote for Retro. I found Mezzo to be very shaky.

If you always work with sessions that span multiple drives then Mezzo is easier, but if you keep things on the same drive or are pretty organized then Retro works better, in my experience.

I don't trust Mezzo to work in the background, I've had too many crashes. Retro works fine in the background, not a single problem. I think you will find that background operation on either one is not really that great an idea. It just slows down too much. I just b/u at night. Retro will do the b/u and shut off the computer for you.

I also found the Mezzo interface to be quite confusing at first. Once you get to know it, it's ok, but Retro is just more intuitive right off the bat.

So.....if you really want to b/u from multiple drives without screwing around with the organization of the b/u, then go with Mezzo. If you want absolute reliability go with Retro.

kasper