I used the grass bagger on the back yard this weekend. It was kinda a PITA, because the grass was extremely tall, but it looked really good afterwards. Got a whole bag of grass clippings. It should have been more, but never having used a bagger before, I didn't know how often to check it for fullness.
Also, I hate the fuel cap. Turn the mower on its side to hose off the grass and fuel starts leaking out.