Pros: Lightweight and powerful, cleans out the desktop in about 10 seconds.

Cons: Rather loud and need to have a plug outside so you aren't blowing dust in the house.
Gets warm fast but haven't ran very long.

Other Thoughts: Hold the CPU fan while blowing out!

Pros: If you have dust this thing is a dust demon. I've even used it to blow off the porch. Well built, easy to operate, plenty of cord and attachments.

Cons: Not really a con but the cord is long therefore a bit difficult to store easily.

Other Thoughts: Don't waste your cash on canned gas, this gadget is awesome. Its not quiet but if your cleaning something who cares if it makes noise if it works.

Pros: Extremely powerful. Moves a lot of air at a high rate. Long cord. Comes with several useful attachments. Very solid construction.

Cons: It's pretty loud, essentially the same as a full size vacuum cleaner. The air intake on the bottom can get quickly clogged if you're blowing around a lot of dust. It gets pretty hot rather quickly, especially if the air intake isn't clean. Could pop circuit breakers if used on a busy circuit, as it's 4 amps!

Other Thoughts: After going through dozens of cans of compressed air over the years, I finally decided to give this thing a shot. Wow! If you don't have the space or need for a full sized air compressor, this is the thing to get. The attachments for tiny spaces work great. I'm able to blow out all kinds of PC cases, small household appliances, anything that collects dust. I've even used it to blow leaves off the back porch. Yes, it is that powerful. Just beware the intake clogging up when blasting away dust. This thing will get kinda hot, which can make it like a turbo hair dryer for drying things off. A great investment and really useful tool.