KOOSER55 you are right to think that its better get that dry dirt out first.. Makes wet cleaning easier and leaves a good customer impression. now Bissel vs say a commercial sanitaire. Well Bissel is plastic and will last being hauled around like mentioned here already about a year. Besides belts, not many parts are easily replaceable. However at 45 to 100 dollars you can afford to use and abuse it for a year and then get a new one. With the Sanitaire examples, Chrome motor housing, 50 ft power chord, better plastic components and you can rebuild them yourself with parts readily available from several suppliers. They run from 200 to 300 dollar and some commercial vacs range from 300 to 700 dollars. Again Usually last about 5 yo 10 years with good maintenance...
Hopefully this will provide some better info for you.. and I have used the Sanitaris, the Bissels, Kirby, Oreck XLs, Dirt Devils, Hoovers.. I like the Kirby.. but way way way overpriced, I like the sanitari for its aggresive yet consistant performance in the long run and I love the bissel for the great suction and pickup at such an unbeatable price.. Our price is $46. and some change local! The Bissel is at my apartment and it saves me the cost of bags to pickup after my dogs.