I think these frying pans are the best I have ever bought - I don't go for the madly expensive ones (some are just too heavy!), but these seem to be staying non-stick, need little if any oil/fat, and can go in the dishwasher.  But, to be honest, I often just wipe them over with some kitchen paper and re-use them.  I would, however, love lids for them hence the 4 stars rather than 5.