I don't have any experience with Global avionics but I found the EasyII to be great. The learning curve is a bit high for some people (at FSI, they said it takes most people 100 hours to learn all the tricks and nuances). If you can use a computer, you can use an EasyII. Everything is logical and incredibly functional. In some respects it takes the fun out of flying for some. But, that's another story.