This is the last year they offered a NES controlled unit. It has the latest 1500W load generator and controller. The load generator was recalibrated and brought to latest specs last year. It can be upgraded to PC1 for $99 or to 3D for $$275. The older NES unit in contrast costs $999 to upgrade to 3D. I bought it because I didn't want to dedicate a computer to my trainer in the garage. Last year my wife started riding and it is a pain to swap bikes on it. Excellent condition. $450.