I've had breakfast here. I've met for coffee here. I had lunch/dinner here. It's a nice place to hang out.
This place was a McD years ago, then a Kenny Roger's Chicken Place, then a Lick's burger place (the order of appearance might be wrong) and now a pretty nice cafe.
The food is OK here. I find the temperature and seasoning off for me but you really can't go wrong if you need a nice place in Thornhill to meet some people.
There are a few Symposiums around the GTA and they look like they are doing well.
I like going there for breakfast - they are well priced and as long as you get the eggs over easy (which is the best overall since I don't like my eggs burnt) you will have a decent meal.