I have the Black and Decker 19 inch model. Works good for my small yard, but have had too many problems so I can't recommend it. Been recalled 4 times, charger failed more times than I can count, they tried to charge me $189 for a "tune up" when the box clearly says "maintenence free no tune ups needed".
To B&D's credit, they have made everything good every time but I always have to fight for it and after 8 years I'm tired of fighting. Right now the charge indicator is out and the safety switch is failing...if I can get one more year
I will be happy, then junk it and just give up. In the whole time Ive had it I always kept a gas mower here as a backup and needed it at least once every year. Like many things electric that are touted as an alternative to gas powered, its a wonderful idea but the technology is just not mature yet. Maybe someday.