Now that I have had the HRN for a month and mowed about 6-8 times I really like this mower. It fells much lighter and easier to maneuver. It cuts the same why and easier to start. How I would describe the two the HRR felt like a heavy solid tank the HRN feels like a car. As for my issues when I first bought it, I have no issues now. Once I finish mowing I place the mulch/bag lever to bag and most of the grass shots out the back and just mow over the grass clippings. Every mow I like it better and better. The larger engine is nice too not much difference but it is and helps. The manual states to change the oil the first 5 hours or 1 month. I'm going to wait until I get more time. I have an hour/tach meter on it so I can keep track.