I will tell what we bought and can say as far as performance we could not be happier, don't know about longevity yet because we have only owned it for little over 2 months. We got the Shark Vacuum, model NV356E with the hardwood floor attachment. Works outstanding, is as good or better than the Dyson in every respect. When I bought this one I tested it at Bed Bath & Beyond on the DYSON test carpet, I used the Dyson first, ran over the carpet at least twice in every direction then took down the Shark and ran it over the same carpet and it picked up quite a bit more dirt that the Dyson left behind. The ONLY small fault I have with it is the hose is a wee bit too short and doesn't stretch so makes it slightly difficult to vacuum like way behind something like a PC desk etc where you just want a hose with a very small attachment so that you can get into tiny crevices. I have ordered an extension hose from another model (NV22) in hopes that it will fit then I will have the perfect vacuum. It is an upright bag less vac that turns into a light canister in about 2 seconds. Zero loss of suction, easy to empty, has a small head with roller brush that gets into tight spots easily, goes down almost flat when used as upright to get under furniture pretty well and if that isn't far enough then simply push a button and turn it into a canister with hand held floor brush or small "turbo roller brush" that get under ANYTHING. Plus we only paid $160 from BB&B using the 20% coupon. I doubt there is a better vac even for 3X the price. Check out the reviews on Amazon, between the various models I imagine there are around 1500+ reviews and I bet at least 85+% are 5 star.

It would sure help if you mentioned what vacuum cleaner you are using presently. There may not be a need to purchase another vacuum cleaner for the interim. You just want to make sure the vacuum cleaner will filter very well; keeping fine dust from the motor. You will probably need to check or change the bag more often. Most of your "dirt" will be in the entrance area to the construction. You will have quite a bit of dust on surfaces also.

I like the Hoover Dual V for carpet cleaning - it has very good extraction (leaves carpet much drier than others) and it has a separate detergent container from the water and a rinse setting so you can do wash then rinse pass with clear water to remove detergent residue. Also you can pour un-used detergent back into the bottle because it's not diluted into the water until used by the machine! For HEPA vacuum people have different favorites but I like the Dyson canister vacs.

Lucky51, I thought I had explained quite well. It is deceiving when someone uses the meter to sell their product, then tells them they must have this or that vacuum cleaner and nothing else will work, without finding out how much of a problem allergens are for that particular individual or household. A particle meter is fine, but it is important how someone uses it and the information gathered from it. At what number is the meter going to tell everyone when they will react to allergens in the air? It is always better to first understand the customer and their needs. This also means to understand their fears and limitations in regard to floorcare and cleaning. This means to ask questions. If you noticed, I did that. Then take all that info and give them some options that would better suite them. This may also mean telling them they do not need âÂÂmoreâÂÂ, if âÂÂlessâ will work for them. If we all look through our lives, we could recollect people who have tried to sell us more than we need. Previously, I used the "antibacterial soap" as an example. What about going in to find a washing machine or refrigerator. The salesman tells us that we must have this model, because anything else is just junk. We want someone who will just say "No, you do not need all that and here is why". We do not want someone who will play on our fears or lack of knowledge. As I have commented about through countless posts, Miele even knows that there are different levels of reactions to allergens. Miele has accommodated by selling different filters and filtering systems. I give Miele two thumbs up for this. If someone has minimal to no allergic reaction, when vacuuming, why not sell them a vacuum cleaner that will filter well and save some money. Now onto the suction meter. This meter is going to detect how much suction the vacuum cleaner has, but that can be deceiving for the uninformed. You should know that suction is not the only way to tell if a vacuum cleaner is going to clean. There have been vacuum cleaners registering lower than another, but cleans better than the higher registering vacuum cleaning. I could go on about suction, but I will leave that for another time. So, using a meter to sell a vacuum cleaner can be deceiving. Do not expect every person, who walks into your store, to understand the particle meter. I explained filters, filtration, etc. You gave the poster your three readings, then told them what to get.