I own both a GSI and the Winnerwell and while they are very similar in size, both all stainless steel including interior pieces, glass top and well made. However, the handle on the GSI gets hot and the Winnerwell does not. Also, the GSI can make a mess because coffee can splatter out the spout if you are boiling at too high a rate so you have to turn down the heat once the coffee starts percolating. The Winnerwell has a flap that covers the spout eliminating this problem. These two things greatly effect the day to day functionality of the percolator making the Winnerwell a superior product hands down.