Bought the B&D self propelled version earlier this spring ($420 @ Lowes w/10% off). I ended up with the self propelled only because no one local carries the non propelled and I wanted to buy this local. After 4 uses, I'm happy with my choice. I never had a self propelled mower before nor thought I needed one, kind of glad I did considering this mowers heft. Since I got mine, 2 neighbors have also gone rechargeable. Word to the wise, avoid the Worx pacesetter. My neighbor bought one from HD and has had major issues with the propulsion. It's supposed keep pace with you, but sometimes takes off and often stops unexpectedly. It was funny watching Joe run over his own mower. He's on the 3rd replacement and if this one doesn't work, he's demanding his money back and buying a B&D.
Some things I'd like to change? The power button could be a bit easier to find, maybe raise it? The power connector and "key" could also be simplified so you don't need to pay attention to color or orientation. Obviously, it could be a whole lot lighter!