I have purchased from Vacmaster before. I trust what they recommend and have never been disappointed. They sell all different models but I want something that's going to do the job. I purchased the Canavac LS-750 with Package A. Unbelievable suction! Steve, one of their installers did an amazing job, and even fixed a problem he noticed where the builder had used the wrong elbow and eventually it would have caused clogs if he hadn't taken the time to change it. I have recommended this company to my family and friends and they've all had good experiences.