This is the tuner and antenna.
Amazon.com : SiriusXM SXV200v1 Connect Vehicle Tuner for SiriusXM-Ready Car Stereo Receivers : Electronics
The Magandyne itself is NOT bare bones. I make a habit of looking at what other mfg's are doing. Some are Using Clarion, just CD players. Jayco has one model that is using a RADIO ONLY. No DVD, no CD, nada, ZIP. That to me is bare bones not the Mag.
Magnadyne is Bluetooth, weatherband, DVD, CD, MP3, GPS, 5.1 surround out (one of the very few dash radios that offer this), 2 audio IN feeds. Its a pretty robust system as long as you have the firmware updated. Is it perfect? No, but I personally use this system and it works pretty good in my mind.
Now, the GPS I can't speak for. I use Google maps turn by turn while in the states and TomTOm installed on my iPhone for Canada (since the maps are downloaded to my device, no data needed).
I have had Kenwood, B&O, Bose, Pioneer, etc, etc through the years. I can say without a doubt there was not not one system that was perfect. The Magnadyne might not be the system that you want...but that's why it is so easy to upgrade to whatever your heart desires.
We try to give you a good system at a good price. If we were trying to be "cheap" we would put in a radio only. Or a radio with CD player. There are definitely cheaper options on the market. The MagM4 was a nice balance of features and price.