This Cuisinart CPM-700 EasyPop Popcorn Maker has gone thru a few revisions over the years and the improvements have been good.  The smooth sided top makes cleaning easy.  Although Cuisinart’s customer service is great about sending out replacement parts, this popper seems to need more replacements than most.  First, the bottom unit which detaches from the base tends to get worn and snapping it back into place can be tricky.  One popper we used even had the lock brake all the way off after 6 months of heavy use.  The dome top tends to crack with small falls or months of usage.  The taste of the popcorn is great and the large dome allows the kernels to fully pop leaving fewer unpopped kernels.