During the first few months of use, this pan was great, and lived up to all of the reviews.  Unfortunately after about 3 months or so of us (cooking several times per week with the pan), the pan started to get coated with old food residue.  We tried cleaning it per Greenpan's recommendations (boiling with water, then wiping down), and scrubbed with several rounds of serious elbow grease, but stains/old food residue kept building up.  

Unfortunately the pan is now essentially unusable as anything we try to cook burns extremely quickly due to the old cooked food buildup.  We've bought another manufacturer's frying pan to replace this one, and this one is sadly getting tossed in the bin.

For reference, we have an induction cooktop, and were always careful to keep the heat low.  We never washed the pan in the dishwasher, always hand washed.