The *best* Vacuum Cleaner for allergies?

I have a Amway CMS1000 and a Kirby Ultimate G. I have my allergies under control just wanted to know others thoughts on this subject...my other ideas are:
* Bagless machines are the worst for allergies because when you dump the waste - it creates clouds of dust.
*Bagged machine have on-going costs
* Dyson branded machines are notoriously unreliable and easy to break
*Kirby's can do more than vacuum....

So tell what you think.

Answers:
I have a Kirby...and for what I paid for it, I should be able to drive it to work.

Other answers:
I have a Eureka Bagless Vac. I don't empty the canister in the trash in my house. I take it out to the dumster, outside trash. I also clean my filters atleast once a week, and steam my carpets atleast twice a month. My son has sever asthma so I have to be really careful with my carpets and keeping everything clean. Hope this helps.
I have a Eureka Bagless Vac. I don't empty the canister in the trash in my house. I take it out to the dumster, outside trash. I also clean my filters atleast once a week, and steam my carpets atleast twice a month. My son has sever asthma so I have to be really careful with my carpets and keeping everything clean. Hope this helps.
A Dyson is the best vauum for anyone with allergies. I have severe allergies/asthma and have tried them all but the dyson has never left me sneezing. It's not cheap, we paid almost $400 for ours but its worth every penny. It's easy to use, easy to empty and ours came with a great warranty. I personally have nothing but good things to say about them.
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