I agree with the reviewers that this device does a good job when you don't want much oil.  If you're not worried about oil, the Stir Crazy popper is the absolute best choice.  The biggest problem with this popper is the necessity of the PowerCup concentrators at fifty cents each.  You can reuse them a few times, but not if you're going to clean the popper between uses.  You'd have to clean the popper with the used PowerCup concentrator in it.  Presto recommends wiping out the bowl and concentrator with a damp cloth.  I doubt the effectiveness of a soapless damp cloth on cooking oil residue.  You cannot immerse the PowerCup concentrator in watch, so forget about rinsing out any soap residue.

If you don't use any oil, you should have much better results.  But, you could just get a hot air popper and never have to buy the PowerCup concentrators.  I bought this item thinking it would work without the gimmicky concentrators, thinking they were an enhancement.  No, you MUST have them.  I tore the first one trying to remove it so I could clean the popper.  First PowerCup concentrator used lasted one time.  The next time I popped two batches using one PowerCup concentrator.  It worked, but then I wondered about cleaning up (I popped with oil).  After laughing for a minute I just threw the oily popper into the box and put it back on the shelf.  I think prepackaged microwave popcorn is less hassle and cheaper.  The Stir Crazy is still king.

By the way, when my popper came out of the box new it had something burned along the edge of the bowl near the rim that actually charred and discolored the plastic.  The clear plastic bowl looked hazy and scratched.  My wife was convinced the popper had been used.  I don't think so, but I would not buy again.  Presto -- get rid of the concentrators.
I agree with the reviewers that this device does a good job when you don't want much oil. If you're not worried about oil, the Stir Crazy popper is the absolute best choice. The biggest problem with this popper is the necessity of the PowerCup concentrators at fifty cents each. You can reuse them a few times, but not if you're going to clean the popper between uses. You'd have to clean the popper with the used PowerCup concentrator in it. Presto recommends wiping out the bowl and concentrator with a damp cloth. I doubt the effectiveness of a soapless damp cloth on cooking oil residue. You cannot immerse the PowerCup concentrator in watch, so forget about rinsing out any soap residue. If you don't use any oil, you should have much better results. But, you could just get a hot air popper and never have to buy the PowerCup concentrators. I bought this item thinking it would work without the gimmicky concentrators, thinking they were an enhancement. No, you MUST have them. I tore the first one trying to remove it so I could clean the popper. First PowerCup concentrator used lasted one time. The next time I popped two batches using one PowerCup concentrator. It worked, but then I wondered about cleaning up (I popped with oil). After laughing for a minute I just threw the oily popper into the box and put it back on the shelf. I think prepackaged microwave popcorn is less hassle and cheaper. The Stir Crazy is still king. By the way, when my popper came out of the box new it had something burned along the edge of the bowl near the rim that actually charred and discolored the plastic. The clear plastic bowl looked hazy and scratched. My wife was convinced the popper had been used. I don't think so, but I would not buy again. Presto -- get rid of the concentrators.