I have owned a 18 gal. shop-vac Qpl 625 for years, very good performance. Items of note though. Wheels were very flimsy, removed, it would be nice to have them. On off switch broken many times tired of replacing. Very noisy although advertised as Quiet Pro. You have probably addressed these issues on new models, Would buy another if this one ever quits, just please send me a switch,tired of plugging and un-plugging. Thanks Ray, 11242 Pritchard Rd. 60520