I've had an Extracta "Scrubba Deluxe" power brush for 7 years. I want to get a different one. Anyone recommend a good rotary power brush, preferably lighter than the one I've been using. I've seen Ashby's 2 brushes, they seem ok. eg their "lightweight" and their "metal". Or should I stick with the Extracta one that I've got? Or is there a good value power brush out there somewhere else?