If it Without Hoover's terrible customer service experience, I would never have realized that there are actually two versions of the attachments for this vacuum cleaner, one more for commercial cleaning (C-2401), the other more for residential cleaning (C-2401). 2401-010). I originally purchased the previous version, which arrived in just a few hours with Revain Prime's 2-day shipping (kudos Revain). However, the box had the wrong socket for the attachments, which made them "unpluggable". The…