The massive shock kicks the tool up and off the partially embedded nail, resulting in a seriously scary experience. All the tools we tested are strip nailers, not coil nailers. Check your codes and your applications to see which nail type is right for your job. This may limit your choice of nailers. The Hitachi nailer is a little more picky.
Plastic is a popular and cost-efficient way to collate nails.
No doubt it's here to stay. Due to the way the spent plastic ejects from the tool, the risk isn't limited to the tool operator and extends to anyone in the immediate vicinity. Over the years I have spent way too much money having little chunks of plastic picked out of my employees' eyes. With any nailer, you must insist that your people wear eye protection. With plastic collation, you have one more reason to make it a mandatory safety precaution for everyone on your jobsite.