The 5.1 was one of the main reasons we went to that radio over others....but what we found is that in an RV setting, there was no way to position the center channel correctly and frankly most people didn't seem to care. The new system will be 4.1.
The Jensen is also a newer system with the latest Bluetooth technology and an upgraded gps interface. Still iGo, but the Primo version. "Hands on" I have found it to be much more intuitive.
The Sirius thing became more of an issue. People see the "Sirius Ready" logo and assume it has it. That became very frustrating because that IS NOT our term...but Sirius' term. Very misleading in my book. When we originally bought that radio he had them take that logo off...but if you are licensed with Sirius they REQUIRE you to print that logo on. Customers would buy the unit, expect Sirius. Take it home and then it became "he said she said" between dealer salesperson and customer.
I still use the Magnadyne and have not had any issues with my model. The firmware updates have solved any issues that I did have. Then again, I never use the GPS since I always use TomTom on my iPhone. I just like having all my contacts in there already.
PLEASE do not send questions via Private Message, my inbox fills up too quickly. Post questions in the forum as a new thread so that other users can benefit from the answers. Use Private Messages for sensitive information only (VIN, Contact info or things you do not want the public to see).