The punchlist feature is very easy to use, and easy to publish to contractors.
Depending on the subscription you have with plan grid, you could keep the entire projects revision sheets on your account. This helps when doing the punchlist, because you can see exactly when something was revised during the project.
You can upload multiple attachments in plan grid, that don't count in your sheet limit. This only includes .pdfs, but you can upload as many submittals, spec sheets, schedules, etc. as you need. They do however take up space on your ipad, as everything does as well, so if you have a full device you need to be conscious about that.
We use the attachments feature to review our millwork shop drawings with our clients during on site meeting with our national clients. No need to print out the sheets and flip through them.
There is no separation between issues on a project during the project and creating a punchlist at the end. Would like to see two different features there.
I would like to see the same editing features ( box, text, etc.) from the page review in the attachment review.
It is free to try, so just give it a try. There are many programs that are similar, and they each have there pros and cons.
Any construction issues during the construction administration phase of the project. Less printing for construction meetings and less wasted printing for submittal reviews.