I won a brand new Singer SST Twin fan vacuum on Ebay. For some reason I have always wanted one of these babies ever since I first saw one at my daycare which was nearly 20 years ago. I believe it was this vacuum that started my fascination with vacuum cleaners. Anyway I turned it on and the suction on it is ridiculous, especially on high speed, but my question is, which is the normal mode to vacuum, is it high or low?