I need to strip an entire house of woodchip. We have a young labourer to help (thank the Lord), and I need to assign him with the best toll for the job. I hear the Black n Decker is good but someone says it damages the plaster. It's £32. The Earlex professional jobby is £145 - does anyone know if it's really any better? HELP! I don't want our labourer to ruin the walls too much, but need the best tool I can get. THANK YOU!