I bought my first PowerTank from Marty Rocha back in 2005, the LA convention! Its the light blue one with the HMI P/N and the FQ style cuffed hose end and curved upper wand. I love that machine! I was so excited to finally have one of those, and it still brings much joy to use, but there's something to be said about these later models. I got, from Alex Braun, a nice red one like this, but a little older with the speed control on the hose handle. Also a true joy to use, and a much more aggressive carpet experience.