An admission: I've been eating at Panagio's since 2012 when I moved to Scarborough. I've visited over 50 times since and have never had a bad experience (some 3 star days for sure, but never bad).
Overall, Panagio's offers great value for money. Portions are huge and the prices are reasonable. Seating is comfortable. The restaurant is clean and the bathrooms have change tables. There's lots of parking and it's conveniently located at Sheppard and McCowan, just off the 401.
A couple of negatives: it's not a huge place so I avoid peak periods. It can feel understaffed at times leading to longer waits. There are no really good options for vegans and vegetations; it's a greasy spoon at heart.
I vary my orders between one of their delicious omelets, the"big" breakfast (for pigs only) and occasionally I'll have one of their special breakfasts like the "huevos on the ranch".
Panagio's is good. My wife and I like it and so do my girls. I'll be there for breakfast today!