Out of curiosity, what replenishment system is it? If you can, get the 3001. I used to fix these machines for a living. So long as you run about 750-1000+ prints a day, and clean it once a week, you shouldn't have any problems. If you go less than that, chemistry will start to go stale and you'll have to do frequent remixes. The scanner can occasionally put lines in gradients, but that's typical for Noritsu line scanners.