| | Re: BIS Vs BES
You only get one or the other. BIS as a personal/home user, or BES through your company. Like hrbuckley said, when you use the corporate BES your company pushes something called an IT Policy onto your BlackBerry. This IT Policy restricts how your BlackBerry works. They can shut down all email but their own, they can turn off texting, web browsing, or whatever they want.
You'll get all the access your company allows.