I agree Dan: Hoover vacuums today are, out of the 'big box' machines commonly available, probably the best quality and performance. If we look at Eureka, we see very thin plastic, cyclone systems that load the filter with dirt, noisy brush rolls, etc. They were designed to fail within a year or so. Hoover cleaners, on the other hand, are made to last a "relatively" long time in the hands of an uncaring consumer. Shark cleaners have no parts availability - you are buying, in essence, an orphan. Bissell products are made to be inexpensive, and thrown away.
Kirby, Rainbow, and Tacony are the only three major manufacturers left in the USA. Filter Queen, Silver King, etc. are so small they don't even make a blip on the vacuum radar.
I do love the Sirena. It's a good vacuum, and a great alternative to spending over two and a half thousand dollars on a Rainbow. One thing I've learned is that the Chinese will make a product with any quality a manufacturer (like TTI) is willing to pay for. They CAN make metal vacuums (like Royal), and they can make cheap junk too. It's all about how much a company is willing to pay at wholesale.
I'm so tired of the old argument that if a motor is made in China, the entire machine must be bad. This is a very uneducated and somewhat backwards view, spouted by people who know nothing about the vacuum cleaner industry. While Tacony does use motors made in Mexico, Korea, as well as China, the entire vacuum is injection molded and created right in St. James Missouri. 200 Americans have jobs (with benefits) making them, painting them, designing and engineering them. The motors are made uniquely for Tacony (the DuraTec double fan motor used in the Ultra Premium will run more than a thousand hours).
The goal of a manufacturer is to be profitable so the shareholders will benefit. The goal of engineering is to make a machine that the consumer will like, keep, use, and recommend. The goal of manufacturing is to make the machine for the lowest cost in proportion to the highest quality. When all three work together, you get vacuums like the Maytag line as well as Simplicity and Riccar. Those cleaners are made to clean American homes, to clean them well, and to last long enough that no one is ever sorry they bought one.[this post was last edited: 4/9/2014-11:48]