Its true vacuums with poor filtration will spew dust back into the air and trigger allergies. For carpets and allergies I would recommend a vacuum with a powered brushroll for the carpets and hepa bags for your allergies. Avoid bagless vacuums because they release dust back into the air whenever you empty the bins.

The Kenmore Elite Upright $219. There are several models the BU1017 has a few more features. Both clean carpets well and use hepa bags and a hepa filter. They are on the bulky heavy side but they have a brushroll shutoff switch.

Simplicity Allergy S20EZM $269 is another upright vacuum with hepa bags and a hepa filter. It's lighter than the Kenmores but it doesn't have brushroll shutoff.

The Kenmore Intuition is a more budget oriented model that seems to be outsourced to a company that makes swiveling uprights for a lot of different companies. One major place where companies that make these affordable machines slash the build quality is in the hoses, so the material they use in the Kenmore Intuitions, like with units from other brands like Shark and certain Hoovers, is fairly weak. They are a decent deal when they go on sale, but they are more cheaply built than they should be.

With that said, the Kenmore brand still offers some of the better affordable vacuum cleaners out there, and basically the only budget canisters with power nozzles. They are hit or miss. Their more expensive stuff is actually pretty good and I have definitely asked for follow ups a lot of the times I have suggested them and buyers generally like them, especially their one CrossOver bagless upright.

If you are looking for an affordable bagged upright, I would go with the Kenmore 31140. It has more features than the Hoovers such as a separate brush roll motor with an on/off switch on the handle, a lifetime belt, sealed exhaust filtration, and so forth. It is more expensive than the Hoovers, but worth the money because the build quality is that much better. The BU1017 is about the same unit, just loaded with more features such as a dirt sensor, one more height setting, a longer cord, a fancy geared brush roll, a slightly more powerful motor, dual headlights, and that is about it. It's not much more expensive than the stripped 31140, so definitely consider it too. The downsides to these units are that they are somewhat heavy and the attachment hoses are short, but they clean really well and come with extender wands and long crevice tools. They were designed by Panasonic and are made in-house by the company that licenses the Kenmore name; a company that has manufactured Kenmore vacuum cleaners and parts for a long time.

If the Kenmore uprights are too expensive or you are worried they may be too heavy, the Hoovers are decent. I have found that a lot of the Hoovers have reduced in build quality in the last five or so years, but the bagged ones tend to be more consistent. They are lighter than the Kenmores and cheaper, so they have that going for them. Plus, they do clean well and bags are cheap and easy to find.