In my opinion the Fritz GUI is absolutely the best and for the price, you can’t beat it. Some people have a little trouble using it because they are unfamiliar with navigating through it and using all its features, but all the questions on how to use Fritz can be found HERE.
Don’t use the Fritz 12 engine that comes with it though. In fact, don't use any of the Fritz engines. the reason is because other free engines are stronger. Go to my Blog and search for engines you can download HERE.