Ed,
Those systems are easier, but I would encourage you to try to use the "fingered" mode. It is more difficult in the beginning, but, once you get the hang of it, you won't have to "learn" new approaches any more. You will be able to play on anything, from any manufacturer.
On the other hand, buy something that sounds the way you like and has the features you like, and in a week you will be able to learn the manufacturer's sytem, easy or not.