Cant run the 28zx if you want to race the buggy. on the 9000t's i had 2 new ones and hated them, couldnt hold a candle to a hitec 5955 for steering, 9351 is great for throtle/brake. yes the os is really good, they have fixed the bearing and case problems of the older one....now if they could just stop having issues with the rods nad carbs sticking on the 07 models they will be golden.