I am running a Ulterra T/M and I just bought the Helix 8 mega DI CHO just to run with my T/M. However last time out my trusty 899 on the console, went out to lunch and has not come back. So I am going to run the 8 on the console till I can save up the required funds for a Helix 12 mega. Then the 8 goes up front with the 12 and the current Helix 9 mega that is on the bow will go to the console. You will be very pleased with the 9 on the console. I have networked all of my units and the T/M. So when I get the 12 I will be set for a while. I will say this there is a very large learning curve, I thought that I could jump right into the Helix with no problem but with all of the new things you can do with it its over whelming. If you want to have two units up front as I do Ricky makes some very and I mean very nice transducer fixtures.