Lets see...ALL automatic watches HAVE power reserve. Period. Some Chinese ones last 2 hours, better ones (like Swiss manufacture movements...) can go up to 8 days on a single wind. It would help if you narrow your selection to:
1. Brand you are interested in (such as PAM)
2. Model or a range of models you are interested in
3. Then ask people what movement options are out these for that selected brand range...makes it a LOT easier to answer.
PS: some models come with just one option (manual wind Asian Unitas, for example), others can have variations depending on a maker of reps...such as cheap-arse generic 21J or an Asian copy of Swiss ETA...Even within these there will be variations too - such as low beat UNITAS, high-beat UNITAS, platinum-plated UNITAS, engraved high-beat platinum plated UNITAS, painted low-beat nickle plated UNITAS, high-beat UNITAS with low cannon pinion, high-beat UNITAS with H3 cannon pinion and so on so forth...