Pros: work like canned air

Cons: noisy but who cares ?

Pros: Powerful
Comparable to Compressed air
Best compressed air alternative on the market

Cons: Loud bust doesn't bother me personally

Other Thoughts: I've had one of these for years and its awesome. I haven bought compressed air since. Although its not quite as powerful it does a really good job. It's also way better then its competitors in terms of power. Highly recommend

Pros: THE BEST ITEM I HAVE EVER PURCHASED!!! Seriously folks, after years of being OCD about my electronics being dust free and spending literally hundreds if not a thousand dollars or more on canned air, I saw this on sale and decided to give it a try. I am amazed at the power this thing has, and all the extra fitting make so you can do just about anything you want with it.
USE IT OUTDOORS

Cons: Umm... none? It can get a bit warm if using for prolonged periods of time but that is to be expected. Also, on the button is a dust filter, obviously it will get full of stuff ( because its job is to blow dust around) Just pull it out with your fingers carefully and use the machine to clean it. Then gently put it back and and you are good to go again.
USE IT OUTDOORS

Other Thoughts: Dude, just buy it, if you hate canned air, or wasting money, and have to have your stuff clean then this is the purchase for you. I have 3 computers and countless other electronics that I like to keep clean. This is the best thing I have ever owned hands down!!
oh yeah: USE IT OUTDOORS

Pros: We have been using one of these at my work place (an IT Help Desk) for several years. I finally decided to buy one for my hardware at home, along with my record player to keep the dust off of my vinyl. It is powerful, awesome, and a much better alternative to canned air. It also reduces the chances of some punk teenager taking a can to get high (very very deadly).

Cons: I didn't have on in college. :)

Other Thoughts: It's fun to turn it on real quick and turn it back off from 10 feet across the room while it's aimed at your cat. The delay from the wind hitting them is hilarious, along with the slightly-annoyed-but-not-too-much face they make while they plot your puny human death.

Pros: Great power.
Never runs out like a can.
Strong build quality.
Multiple attachments.
Replaceable filter.
Easy to remove filter.

Cons: Heavy.
Corded.
Lacks instructions on filter replacement.

Other Thoughts: This unit is exactly as you would expect. It blows air hard and works better than canned air in many ways. The only downsides are that is has to be plugged in making it more difficult to take it outside. And it is a little heavy making it harder to hold for long periods of time. I would recommend this unit over canned air any day. I would also not hesitate to purchase another one. Don't forget to where a dust mask.

Pros: I bought this to blow the dust out of video cards, but it does all dust removing tasks well. If you have a high-end video card, power supply, or CPU, then seriously consider this duster. It also works well on all kinds of fans. It can save you money and hours of agony.

Cons: It gets hot fairly quickly, but the high power of the little device is worth it.

Other Thoughts: Nothing will ruin a GPU, CPU, or PSU faster than dust resulting in excessive heat. In the long run, this duster is much less expensive than endless cans of compressed air.

Pros: Amazingly powerful, extremely durable, saves a lot of money in the long-run.

Cons: Loud and it has a lot of kick. Obviously you have to use it somewhere you're OK with a lot of dust flying around.

Other Thoughts: A great purchase.

Pros: Wait till it comes on sale, and then it's a real bargain. Pays for itself over using canned air in just a few months. Very powerful air flow and comes with attachments for micro-cleaning. Cleanable filter at bottom of unit makes sure the air you are cleaning with is clean. Did I mention its environmentally friendly with no chemicals to pollute the air.
AMERICAN MADE by an AMERICAN company.

Cons: NONE. Between using this in my hobby work and keeping my computers and electronic units clean, it's more than paid for itself. Best investment I have made in years.

Other Thoughts: If you have a lot of electronics to clean, or computers, or used canned compressed air in hobby work, invest in one of these. Save youself some $$$. A solid product I would recommend to anyone.

Pros: Powerful. More than enough for it's purpose. Item is Made in the USA. That's a big plus. Also, biggest pro of all, this item very well pays for itself overtime. Superfly delivery on my end.

Cons: Aside from being loud, is that really a con? Nope.

Other Thoughts: You can get rid of those canned air-compressed duster. Make sure to register it. You can not beat that warranty on listed on the box.

Pros: It's like a tornado in a soda can. I bought it to dust out my atx full tower...it did that in 5 seconds then took out the rest of my basement with it. Papers, greeting cards, receipts and wall scrolls all over the place. Dust clouds flew from every monitor and my hdtv. I wasn't ready for the power at all.

Cons: Loud.