I would recommend the Simrad. I helped Jax install his and it was a piece of cake. The unit has worked flawless. I have a bad taste in my mouth for Raymarine after purchasing a Sport Pilot Plus and having many problems with it. I sent it back 3 times. The first 2, they told me there was nothing wrong with it. The third time, they finally figured out it did not have the proper lubriaction in the unit from the get go.