Hi Erica,
We've been scanning barcodes for gift entry in Raiser's Edge for about 6 years, and we've been using the same equipment the whole time. We use Datalogic Gryphon series scanners. They're very reliable and easy to use. (Not that we have anything to compare to.) The scanners seem to work better when the barcode is printed on thinner (lighter?) media. Also, the barcode needs to be crisp - if there's any kind of aliasing they won't be read. We have our barcodes set to add constituent, appeal, and package IDs into batches. Please reach out if you have more questions, and good luck on this venture.
Best,
Dania Calandrino
Data Integrity Specialist
Department of Development Records
The Art Institute of Chicago