I am planning on upgrading both my graphs and the TM. I was planning on going with an Ultrex and Lowrance Carbons. I know the Ultrex can link with the Birds and you can navigate from the graph. Realistically (in real world tournament fishing) what does that mean or what will I be unable to do with Lowrance graphs. I have always trusted Lowrance and I need a major reason to switch... Please let me know what exactly I will miss out with on an Ultrex/Lowrance combo over Ultrex/Birds.... Thanks for your help.