Hey Babs,
There is a low rez preview I think, although I haven’t used it. The premiere aspects of PZP are that it’s a generator and works inside FCP, rotation is built in and not a $69 upgrade, it requires no keyframes for transitions to screw with and is so fast, the render time is inconsequential.
Of the stand-alone apps, Fotomagico is really great. Blazingly fast, with it I did a 6 minute or so video from about 70 stills in about 45 minutes.
My 2