I think its a good game but current code support keeps it from being a great game. I've had my game for 9 months and haven't had new a software update yet. It really just needs a fix for Slash solo, some score balancing, and it would be great if they could find a way to show the song value buildup on the display during the build phase. I think being able to watch this value build will make the early multiballs feel more meaningful if you had more transparency on what you are doing. The current software just isn't very transparent in letting you know how to score well in the game. I've implemented the recommendations that Eskaybee recommended which helps balance out the scoring and make it more enjoyable but the game really needs another update or two to make the game great. From a theme immersion standpoint the game is second to none and the sound and lightshow is unbeatable. I think the layout is also solid and fun to shoot although I wish JJP flippers had a better feel to them. Besides rules and flipper feel the game is great and hopefully the rules will be addressed in a future update.
I used to own the DE GNR and I think the JJP version is World's better. I'm surprised to hear how many here prefer the DE one. It's not a bad game but it doesn't compare to the new one in my opinion.