Wireless barcode scanners

This is slightly off-topic but I can't think of a better place to ask.
I have been asked to investigate wireless barcode scanners, and
preferably ones that can work with an iPad (or be connected to an
iPad), for inventory purposes. I have found a few used in the retail
environment but I was wondering of anyone has bought any recently that
they like. Even if you have a wireless barcode scanner that isn't
designed to work with an iPad that you recommend, I'd like to hear
about it. I know this is vaugue, but that is intentional, I am trying
to cast a wide net in hopes to hear what others have done that might
be of interest since we are just starting to look into this.

Thanks,
Edward