There's no doubt the engine tech etc. is top notch but its never been about the engine, they've always been great, they are just getting more refined. I absolutely loved my turbo RX1 and there will never be another sled made that sounds like one of those did. After I did the Impulse mid mount conversion on it, it was insane. It would climb anything you pointed it at. When you ride a sled like that you need to be pointed exactly where you want to go before you hit the flipper because you'll be there sooner than you think. Same thing with my Nytro and Nypex, each one more refined than the next but the common denominator being even with all the lightweight crap is they are all tanks with great engines.
M5