I've owned a few Ridgid shop vacs in the last 8 years. The one with detachable blower motor still pulls strong. I figured I would go all out and buy a new rv2600B for my plumbing service truck. More $$$(Over $350) than standard model, but figured the two stage motor would be strong and durable. I must tell you that so far, I'm very unimpressed and wishing I just bought another cheaper model. The suction is OK, nothing to write home about and seems weaker than my old $99 blower model!! Is it the filter? I know that can make a difference, but the filter is new, clean, along with the rest of the unit. Really kicking myself on this one.. If anyone has suggestions or help, I'd appreciate it. I have plenty of Ridgid plumbing tools, but can't understand how this expensive vac seems so weak!