I am a Tech at the local Honda Powerhouse. And yes, we are ranked #2 in sales and have only been a Powerhouse since last November. I would have personally chosen the 420. From my experience with the 400AT, they are probably the least sold. The 420 is a very solid bike. However, too many people underestimate the 350 Ranchers. For the money, the 350s are hard to beat. I am not allowed to give any details as it's strictly classified, but the future Honda bikes (ATVs and Motorcycles) looks very promising.

By the way, the 420s come in blue too. If you haven't seen the new 500s, they released a white one not too long ago.