Been looking myself!!
Need to outfit the new rig with a better console unit and move the existing one to the bow.
I have looked at the Helix and several others and man can it get confusing.....so many choices!!
I think I am just going to go with DI, to me, the SI is hard to understand
Check out bbgmarine.com, they run some really great prices and have specials very often but they go FAST.