I like the Magnum control panel better as well, so Sensata is the way to go if upgrading. We're looking that way as well.
The Xantrex is great, but I think the menu can get a bit confusing...I like the simplicity of the magnum stuff.
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).