Optima in Altimeters July 5, 2006 I bought the Optima so that I could use my Neptune as my visual altimiter and still keep the canopy warnings. I tried the guide feature of the canopy warnings and found it to be very annoying. If all I did was swoop it would probably be a very useful tool. Other wise it is just very annoying. Other then that I have been very happy with the Optima. The interface can be a little confusing at first, but it didn't take me very long to figure it out.