I use an 8830 on Verizon. It's my personal cell phone, but I get my work email on the device in real-time. I don't use it for voice calls for work, but use it a lot for email. While my position is technically 8-5, a lot of the independent contractors who work for us respond to my emails in the evening. This device lets me communicate in real-time with them to get details finalized, and it let's me "detox my inbox." Meaning, I don't sign into my email account at 8 AM on Monday to find 25 emails I need to respond to.
NAD V, NIC Advanced