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What you are looking for is the full featured garmin 2700 series. http://amzn.to/22sSH4a
That link has the same device youd get on the garmin page, but at an 80$ savings. It includes the backup camera. And the 2798 unit itself has bluetooth, voice navigation and can link to your smartphone. Its a bit more expensive then the mid tier units by garmin. Thats to be expected though since the backup feature is new and in demand.
As far as choosing other brands besides garmin, id strongly recommend going with Garmin. They are easier to find parts for, easier to repair under warranty should they fail, and garmin is one of the more reliable GPS brands and map makers period.
If you have further questions or concerns, let me know.
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