Vacuums

I love to vacuum. I don't know what it is about hearing dirt and crumbs getting sucked up that I like so much. Here is the dilemma though. Our vacuum is awful! We bought it a year ago or so because our old one which we had for nine years totally died. Well this new one you can vacuum over a string five or more times and it won't suck it up. It is a Hoover just like our old one was. This "new" one is bag-less while the old one was not. I need your input of which vacuum you all like.