Have not used it with any other units. The new gen-2 units fixed a interface issue. Comes with the ability to use Navionics maps, once ice is done it will be my new open water unit. Has built in gps.
Hodges Marine has them right now for less than $450.00, with free shipping in the US. I think it took like 5 days from placing order to delivery. Good luck with what ever you ge!
Keep it safe! JDL