Other Car Rental Programs (ie. Alamo, Enterprise) - Discount Car Rental (Toronto - Canada) Full-Size Car Rental

I was wondering. I'm taking a full-size car rental out for a road trip and was wondering. What cars are most common in the full-size car catagory and what type can I get from Discount? I'm guessing it'd be pretty similar to others but I want to see who else has gone with Discount before.

I have never tried Discount but I have heard Discount is a company owned by GM. So expect a GM line car.
P.S. Renting car at Pearson Airport is nearly double of the price then other GTA location